Connectedness as a Core Conservation Concern: An Interdisciplinary Review of Theory and a Call for Practice
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Calls for society to ‘reconnect with nature’ are commonplace in the scientific literature and popular environmental discourse. However, the expression is often used haphazardly without the clarity of the process involved, the practical outcomes desired, and/or the relevance to conservation. This interdisciplinary review finds that the Western disconnect from nature is central to the convergent social-ecological crises and is primarily a problem in consciousness. Connectedness with nature (CWN) is therefore defined as a stable state of consciousness comprising symbiotic cognitive, affective, and experiential traits that reflect, through consistent attitudes and behaviors, a sustained awareness of the interrelatedness between one’s self and the rest of nature. CWN sits on a continuum comprising information about nature and experience in nature but is differentiated as a more holistic process for realizing transformative outcomes that serve oneself and their community. Various instruments are available to measure the CWN construct, although their cross-cultural transferability is unclear. Multiple benefits of CWN linked to physical and psychological well-being have been identified and CWN is distinct in that it supports happiness and more purposeful, fulfilling, and meaningful lives. CWN has been found as a reliable predictor and motivation for environmentally responsible behavior (ERB). CWN may benefit conservation discourse by providing: a more compelling language; hope and buffering frustration in the face of environmental crises; a more enduring motivation for ERB; and an accepted avenue for tackling ‘fuzzy’ concepts often avoided in conservation. Bolstered by interdisciplinary collaborations and action-oriented education, CWN presents itself as a radical but necessary prerequisite for realizing desired conservation and environmental behavior outcomes.
KeywordsConnection with nature Environmental behavior Human-nature relationships Nature experience Environmental concern Conservation and sustainability education
The human disconnect from nature is at the heart of the perceived environmental crisis
This separation from nature is driven by physical and psychological factors, with the latter signifying a problem of consciousness
CWN is a stable state of consciousness comprising symbiotic cognitive, affective, and experiential dimensions that reflect a realization of the interrelatedness between one’s self and the rest of nature
CWN is positively linked with ERB and multiple variables supporting human well-being, including happiness.
Existing theoretical knowledge of CWN needs to be matched by greater transdisciplinary collaboration in conservation and education to support the practice and empirical-based evaluation of CWN implementation
CWN is foundational to effective conservation practice and ERB and should therefore be prioritized in related education strategies
The Call to Reconnect with Nature
…a great need for interdisciplinary efforts to tackle perhaps the most pervasive underlying threat of all by reconnecting people and nature…even if all the other building blocks of effective conservation are in place, we will not succeed unless the general public cares, and they are unlikely to care enough if they no longer experience nature directly.
This call echoes the views of ecologists, environmental educators, and nature writers who have long stressed the importance of individuals’ connectedness with nature (CWN) in fostering an ethic that motivates people to become more engaged citizens who practice environmentally responsible behavior (ERB) to support resilient social-ecological systems [3, 4, 9, 10, 11, 12, 13, 14, 15]. This call also finds support in many natural history or bio-philosophical treatises [2, 7, 16].
However, despite the case for CWN being replete in the literature from, for example, ecophilosophy, public health, environmental education, nature-based tourism, outdoor adventure, and multiple psychology disciplines, global society has made little progress in achieving aspirations toward CWN or behaviors which sustain biodiversity and healthy ecosystems [8, 12, 17]. There is also an apparent lack of appreciation in government, business, and the general populace about the significance of CWN and its relevance to societal problems [2, 3]. Notwithstanding the mounting empirical evidence and calls for society to “reconnect with nature,” a critical mass of decision-makers and opinion leaders in governance, science, and education circles have failed to grasp the significance of CWN in theory and practice in terms of achieving desired social and ecological outcomes. Of particular concern is that a serious and sustained focus on CWN continues to evade the majority of conservation practitioners and researchers. This “knowing-doing” gap (e.g., ) between the widespread recognition of the need to reconnect with nature (as a prerequisite for biodiversity conservation) reflects the general absence of this concept in conservation practice and, more generally, education. Is the task of reconnecting people with nature fundamental to and compatible with practices that deliver conservation outcomes? If so, is there sufficient understanding of CWN in conservation and sustainability education in terms of how it can be defined, practiced, and evaluated in order to foster ERB?
In introducing the field of conservation psychology, Saunders  outlines possible ways of organizing research areas within the field. This review draws on that format and explores theoretical, applied, and evaluative dimensions of CWN at the individual level (primarily)and the collective or group level. The paper, therefore, synthesizes a large cross-section of interdisciplinary literature to (1) review definitions, conceptualizations, and measures of CWN (theoretical); (2) cover activities and practices commonly associated with CWN (applied); (3) discuss possible ways to measure the success of strategies promoting CWN (evaluative); (4) highlight the benefits of CWN to human well-being and ERB; and, (5) emphasize the relevance of CWN to conservation by proposing avenues for its inclusion in common discourse and education so as to effect action [4, 20, 21].
Systematic Keyword searches of bibliographic e-databases: American Association for the Advancement of Science (CrossRef), American Psychological Association (APA), GoogleScholar, Life Sciences (JSTOR), MEDLINE (NLM), Nature Publishing Group (CrossRef), OneFile (GALE), SAGE Journals Online, ScienceDirect, Scopus and Web of Science. A three-step process was performed: i) using the words “nature” with the root “connect*” in the title, abstract, or keywords; (ii) searching for terms which may encompass CWN: “nature relatedness,” “environmental identity,” “ecological self,” “place attachment,” and “human-nature relationship”; and iii) subjectively screening results according to their perceived relevance to primarily conservation, psychology, and education disciplines, and they as pertain to CWN theory, application, and evaluation.
Snowballing An iterative process of using citations from the literature returned during the systematic search as an avenue for identifying further pertinent literature. Snowballing also included addressing those texts as identified through the subsequent peer-review process.
Synchronicity (cf. [22, 23]) Giving due consideration to the literature which was coincidentally encountered (through e.g., peer recommendation, serendipitous discovery) at the “right time” and which found intuitive and meaningful resonance with salient questions at that stage of the review process. Given the multitude of ways in which human connections with nature can be addressed, this additional subjective filter helped prioritize an extensive list of search results.
Notions of CWN are also replete in informally published scholarly literature and stories of individuals’ kinship with nature are common in many cultural accounts  as well as in the writings of those who have spent prolonged reflective time encountering the natural world . Therefore, the literature review was broadened to include other scholarship to augment the scientific peer-reviewed literature . Steps 2 and 3 were particularly helpful in identifying informally published literature, though it is accepted that pertinent texts may still be missing.
Types and drivers of the human (Eurocentric/Western) disconnect from nature
Initial historical drivers (severance/separation)
Loss of respect, humility, and empathy with nature 
Roman system of divide and rule 
Non-reliance/dependency on consumptive uses of nature 
Adversarial nature, e.g., disease, fires, plagues, earthquakes, and extreme climatic events 
Continual present-day drivers (maintenance/perpetuation)
“Shifting baselines” (in memory, perception) 
Scale (size and speed) of urbanization 
Poor design and development of the built environment 
Indoor sedentary entertainment 
Explosive population growth 
Globalization and multinational corporatism 
“Nature” is largely a social-cultural construction and its conceptualization will vary across—and inevitably be influenced by—such contexts, including disciplinary epistemologies . Readers should remain mindful of what is “nature” when reflecting on this review’s implications. We use the term “nature” to refer to any element of the biophysical system which includes flora, fauna, and geological landforms occurring across a range of scales and degrees of human presence . “Nature” may be therefore conceived as the biophysical environment as it exists without human beings. Yet this distinction remains problematic since it perpetuates the conceptual and perceptual human/nature divide . However, for the purposes of approaching this review, it is a necessary demarcation.
An individual’s ecologically desirable actions are described using a range of terms including: “pro-environmental behavior” (e.g., ); “environmentally responsible behavior” (e.g., ); “conservation behavior” (e.g., ); “ecological behavior” (e.g., ); and “sustainable behavior” (e.g., ). Here, we use the term “environmentally responsible behavior” (ERB) to capture these various terminologies. However, it is noted that “conservation behavior” is not necessarily synonymous with ERB.
The Oxford Dictionary  defines the verb “connect” [1. in relation to an object] as “to bring together or into contact so that a real or notional link is established; join together to provide access or communication,” and [2. with no object] as “to form a relationship or feel affinity with someone” . “Connect” originated from late Middle English (i.e., eighteenth century onward) to mean “be united physically” from the Latin connectere—from con (together) and nectere (bind). The Oxford Dictionary  definition for “reconnect” [1. to an object] is “connect back together” and [2. with no object] to “re-establish a bond of communication or emotion.” This etymology informs understandings of CWN and points toward a communicative relationship involving a process of physical contact and/or emotional bonding.
“Reconnect,” like other terms in the conservation lexicon (e.g., restore, rehabilitate, regenerate, reforest), implies a perceived loss and a quest to return to a more desirable, but often difficult-to-define, state. While some of these terms relate purely to ecological systems, “reconnect” (and “restore”) may equally apply to the human-nature relationship. “Reconnect with nature” serves well as a generic call for behavior change; however, in contrast to the measurable state of CWN, it is action- and process–oriented, difficult to pinpoint as a measurable “state” and is therefore of limited use as scientific nomenclature.
Scholars may therefore refer to any of the following: “connectedness to nature” , “connectivity with nature” , “connection to nature” , “nature connection” , or “nature relatedness” . We prefer “connectedness with nature” (CWN) instead of “connectedness to nature” because it evokes the subtle yet important idea that (1) humans are already an intimate part of nature and (2) that the state imbues a sense of reciprocity and mutualism. In this paper, we use “disconnect” to refer to the physical and psychological (i.e., cognitive, affective, and experiential) separation from nature.
The Disconnect from Nature
The drivers of humanity’s disconnect from nature have been extensively debated and documented [1, 3, 28, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48]. Drivers may fall into four different categories: (1) psychological severance; (2) physical severance; (i.e., events and trends that initiated the disconnect from nature); (3) psychological maintenance; and (4) physical maintenance (i.e., events and trends that perpetuate or exacerbate the disconnect from nature) (Table 1). All drivers are likely to have been influenced by—or are a result of—cultural norms or discourses . The drivers may fit within more than one type, as one driver may function to cause disconnection in multiple ways; for example, technology-mediated lifestyles could fall into all four types, depending on context and how broadly “technology” is defined. Similarly, the physical driver’s may stem from prevailing psychological mindsets; for example, colonialism as a result of a “logic of domination”  and historical drivers may still persist today (e.g., legacies of Ancient Greek, Cartesian, Enlightenment, and Modernist thinking). We have thus pragmatically classified according to which type of disconnect is, in accordance with common associations made in the literature, most likely a result of the respective drivers (Table 1).
The call to reconnect seeks to overcome peoples’ general perception as being separate from, and typically outside and above, nature and ecology (e.g., food-webs) [37, 41, 49, 50]. This “blind spot”—that is, an inability to see oneself as part of nature and a denial of one’s dependency on nature—is recognized as a key contributor to ongoing environmental destruction [4, 28, 41, 51]. More fundamentally, the human/nature “hyperseparation” embedded in the Western discourse is intimately linked to pervasive cognitive assumptions which split a unified reality into gendered dualisms (e.g., mind/body, reason/emotion, civilized/primitive, light/dark) – all of which tend to privilege the dominant former (masculine) over the latter (feminine) [41, 52, 53, 54]. Similar schisms are found within religion (as a separation theology with a masculine God removed from His creation (a feminine Earth)) and science (as a Cartesian-inspired separation ontology where nature (feminine) may be an object for detached human observation, possession, and control (masculine) [7, 55]).
The excessive subject/object partitioning of the world impedes people’s ability to see or imagine connections between their thinking, doing, and being– a split that Spinoza already identified in the seventeenth century as being detrimental to a spiritual vision of the world [42, 56]. Mechanistic thinking was of measurable benefit to the biophysical sciences emerging during this period in the same way that dominionistic thinking enabled governments to offer citizens a degree of security and protection against adversarial nature (e.g., natural disasters and disease) [57, 58]. However, in both cases, such thinking and the values it supported was devastating to the human sense of belonging, mutualism, and connection with nature, earth, and the cosmos as a whole [58, 59, 60]. The perils of industrialization (as part of a doctrine of “progress” [61, 62]) and scientific rationalization on the human-nature relationship were also highlighted by the Romantic Movement of the eighteenth and nineteenth centuries , even though Romanticism itself has since been criticized for “fetishizing” nature as being unspoiled, wild and something to be admired from afar . In any case, such resistance gradually gave way to Realism and was further displaced by burgeoning post-war consumerism, resource exploitation, and technology-reliant lifestyles fueled by a disenchanted capitalist-driven culture [1, 2, 59, 61, 62, 64, 65, 66]. Some suggest that in losing contact with the poetry, archetypal myth, and symbolism of nature, we are creating a world devoid of meaning and further severing our connectedness with the planet [61, 67, 68].
As people de-sensitize and/or adapt to these social and environmental changes, the (acceptable) reference point for measuring the extent of the human/nature disconnect is lowered with each generation .The cumulative result is the “extinction of experience”: a devolution toward a largely unnoticed loss of regular, direct, and meaningful contact with nature [2, 19, 69]. This enlarges the “blind spot” concerning dependency on nature, can invoke fear and intolerance of certain species and has profound implications for ecologies, societies, economies, and human well-being [3, 5, 70]. We see this as a debilitating convergence of crises (or “polycrisis” ) driven by the perceptual disconnect from nature. Reference to perception alerts us to a problem that is intimately tied to consciousness (Box 1) [1, 51]. Understanding the human disconnect from nature as a problem in consciousness may yield valuable insight toward reconnecting.
Modern urban society is filled with potent stimuli: for example, electronic media and advertising which, in addition to creating an illusion of distance from nature , place constant demands on attention and the sensory field within consciousness [85, 87, 88]. We contend that persons increasingly suffer from inattention nature blindness as ecological phenomena are edited from conscious awareness in favor of this artificial “super stimuli” which contain more immediate compelling sensory and emotional content . Inattention nature blindness reinforces peoples’ perception as being separate from nature, since ecological phenomena no longer form a part of the experiences which shape consciousness. Westerners are more vulnerable to inattention blindness as they tend to fixate on focal objects, ignoring background and contextual information [89, 90, 91]. The implications are profound as this challenges assumptions about the universality of nature experience as well as the desired objectivity of scientific observation . If we perceive what we look for, remaining blind to what else is present , then this directed attention away from nature may be central to the “crisis of perception” which, in turn, fuels a more fundamental crisis in consciousness. [94, 95].
Contemporary human consciousness is therefore being distracted to the extent that we remain entrapped in the mundane, unable to perceive the full spectrum of phenomena arising in nature [1, 51, 63, 95]. This intimately ties back to the “extinction of experience”: without the direct experience of nature needed to form an ecological consciousness, we cannot expect an ecological conscience which motivates care and action . Reconnecting with nature therefore requires more than cultural reprogramming: it requires cultivating a consciousness that is attuned to the natural processes that have shaped human evolution over millennia.
Definitions and Conceptualizations of CWN (Theoretical)
Historically, numerous descriptions of CWN have been grounded in cognitive notions about one’s relationship with nature and often based on the premise that knowledge of social-ecological interactions is sufficient to create a conservation ethic . Most standard education and environmental awareness approaches have therefore focused on the provision of information about nature which is usually transferred though formal curricula, internet and media sources, field guides and may satisfy a curiosity or an urge “to know more” .While increasing research has called the effectiveness of such approaches into question [11, 29, 49], CWN nevertheless requires some cognitive dimensions. In this regard, a number of descriptions of CWN recognize the importance of an expanded self-construct which encompasses (and reciprocates with) all life-forms [7, 104]. For example, Schultz (e.g., [7, 24, 96]) sees CWN as the degree to which an individual includes (a knowledge structure of) “nature” within their identity or cognitive representation of “self” . This closely aligns with concepts such as “environmental identity”  and “ecological self” which refer to the essence of oneself with which one readily identifies [12, 43, 104, 106].
More recently, the affective dimensions of CWN have been given greater attention (e.g., [13, 98, 101, 102, 107]) since it is has been found that that emotional connections are key predictors for environmental concern and ERB [13, 32, 102, 108]. Scholars have focused on different aspects of affect. For example, Mayer and Frantz  describe CWN in terms of Leopold’s land ethic  and focus on dimensions such as an individual’s trait level of feeling emotionally connected and belonging to the natural community . Kals et al. . refer to emotional inclinations such as love, respect, and oneness with nature , while other researchers have given attention to the role of active care, sympathy, and empathy for nature [109, 110]. All appear to have their place in terms of links with sensitivity to nature and ERB; however, it is equally clear that such feelings are intimately tied to direct bodily experience.
The experience of nature features heavily in the increasing research being done in areas of health promotion and well-being (e.g., [3, 27, 48, 111, 112]). Generally, experience in nature or contact with nature tends to be seen as encompassing outdoor sports, set recreational activities, nature-based tourism, eco-adventure and is usually pursued in order “to feel better” or receive physical gratification .Through field trips, experience in nature may also facilitate deeper cognitive understanding of information learned or received about nature. However, such activities tend to be mostly structured, purposefully targeted and/or constrained by time and context (Fig. 1). While a sense of CWN may unintentionally arise out of such physical-based activities, it is evident that the experiential dimensions of CWN may have a different quality and be characterized by being relatively unstructured, creative, playful, and acutely sensory aware. In focusing attention, such (in)activities cultivate a degree of stillness in the mind and body .
CWN therefore appears as a complex and veritable mix of synergistic information about feelings toward and experiences in or with nature (Fig. 1). Nisbet et al. . recognize this with their multi-dimensional concept of nature relatedness which, in also drawing on the deep ecology notion of an “ecological self” [43, 45, 54, 104] blends cognitive, affective, and experiential connections with nature [4, 113]. In terms of realizing CWN, experience maybe most insightful, since it can involve the “dissolution of boundaries and a sense of a shared or common essence between the self, nature, and others” [27, p. 274]. Such meaningful experiences are capable of invoking strong affective responses as well as playing a pivotal role in reframing an individual’s cognitive representation of their relationship with nature [63, 114, 115, 116, 117, 118].
Some people may encounter this as a transpersonal (e.g., spiritual) phenomenon [32, 54, 119, 120, 121, 122]. In this regard, Beringer  points out that reducing the human relationship to nature as only conforming to the classical “A–B–C” (affect–behavior–cognition) of psychology does not encompass the richness and ineffability of human experience which interpenetrates the rational and physical world. It is therefore argued that these soulful and spiritual aspects need to be identified, understood, and reconciled with conservation (science) as part of a necessary moral and ethical sensibility for confronting the convergent social and ecological crises driven by the disconnect from nature [39, 123, 124, 125].
Despite this rationale, “spirituality” nevertheless faces impediments for its inclusion in CWN conceptualizations. Firstly, ontological and epistemic contestations (e.g., conceptual views of reality) limit the extent that spirituality can be regarded as being distinct from (i.e., other than an emergent property of) the accepted A–B–C dimensions of an individual’s consciousness. Secondly, while spirituality may form an integral part of a person’s CWN and contain nature-based transcendental components , spirituality may not necessarily be a prerequisite for establishing some level of CWN. This assertion is made largely on the basis that, in Western discourse, the term “spirituality” is confounded by a multitude of layered meanings; individuals may not consider their CWN as having a spiritual component even though they may express their relationship to nature in a way that suggests otherwise. Given that spirituality is often understood as denoting an “other-worldliness” defying scientific or rational explanation [120, 124], spirituality tends to be either dismissed as a serious topic for discussion or avoided because common interpretations of spirituality do not align with personal definitions or experiences. To bypass such roadblocks in terms of defining CWN, we prefer to use “spirit” instead of “spirituality” to refer to that which serves as an individual’s source of inspiration .1On this basis, CWN may be distinguished by its ability to awaken one’s “spirit” and induce an “aliveness” that is considered a common and desirable trait of CWN, as a result of being consistently in touch with, appreciative of, and inspired by nature (Fig. 1) [34, 103].
Researchers note that CWN is more than a fleeting “warm feeling” experienced after spending time outdoors [48, 102]. As Nisbet et al. .see it, CWN comprises feelings and thoughts that include an appreciative understanding of the interconnectedness of life as well as experiences and behaviors that exhibit action and agency toward the environment. The latter points to the importance of sustained commitment in that CWN should ideally consist of less transient and more enduring (i.e., stable) states of CWN over time. In this sense, a committed CWN refers to the willed embodiment of cognitive, affective, experiential, and connections with “spirit” as part of a behavior set which aims to “give back” (or “pay it forward”) through leadership in service of social-ecological communities (Fig. 1; Table 3) [103, 127]. According to Young , individuals are likely to only achieve this “deep” CWN through an intentional process of being strategically mentored as part of a culturally embedded (i.e., community based) process  (Table 3). Literature comprising this review generally does not delineate between CWN and committed CWN; it is, however, an important distinction to make as ultimately personal well-being and the motivation for ERB rests on a sustained sense of CWN that balances faculties of mind, body, and spirit with willpower. This review uses CWN to refer to this more enduring state; however, it is noted that the measures, indicators, and practices outlined later in the paper may not always be referring to the same.
Attempts to produce a definitive and fixed definition of CWN are idealistic and may even border on arrogance, particularly since a sense of CWN is very personal . However, in synthesizing the literature above, the following characterization of CWN is proposed: CWN is a stable state of consciousness comprising symbiotic cognitive, affective, and experiential traits that reflect, through consistent attitudes and behaviors, a sustained awareness of the interrelatedness between one’s self and the rest of nature. CWN is more than the simple contact or superficial enjoyment of nature: it is an enduring appreciation, empathy, and mindfulness of the intrinsic value and shared essence of all life—including non-(aesthetically) appealing and non-(apparently) useful elements to humans: that is, it transcends hedonism, speciesism, and functional utilitarianism. CWN manifests as a commitment to action (i.e., a resolve to respect and take responsibility for conserving nature) [4, 48, 101, 113, 128, 129].
Measuring and Quantifying CWN (Empirical)
Since the 1970s, psychological research has been investigating relationships between various predictor variables and measures of environmental concern, attitude, and behavior [11, 130]. Despite CWN’s long-standing theoretical presence in philosophical and environmentalist literature, attempts to empirically distill, isolate, and refine the CWN construct for the purposes of psychological testing have only gained momentum since the turn of the millennium . This newfound focus has been coupled with the growing realization that (1) environmental attitudes, concerns, beliefs, and behaviors alone are insufficient in explaining individuals’ relationships with nature and their motivation behind ERB ; (2) while efforts to understand individuals’ ERB have tended to focus on personality, knowledge, and skills as predictors [4, 131], it is motivation (as a complex blend of implicit and explicit attitudes, beliefs, intent, values, norms, locus of control, personality traits, and knowledge influenced by internal and external factors [11, 12, 88, 132]) which drives individual behavioral choices [11, 49, 131]; and (3) CWN can influence motivation and be a core motivation in itself. For example, CWN has been found to be a primary motivation for conservation volunteers to engage with projects—which, in turn, sustains their contact with nature . CWN was the core motivation for inspiring Dutch forest managers to carry out their work since their personal and professional actions were embedded in a CWN which transcended the individual and represented an “ultimate concern” for wanting to manage forests effectively . Altogether, the prospect that CWN may help foster ERB has motivated environmental psychologists to develop corresponding measures .
Instruments used for measuring (aspects and traits of) connectedness with nature (CWN)
Reference (Author, Year)
Emotional Affinity toward Nature (EAN)
Kals et al. 1999, 
New Environmental Paradigm (NEP) (revised)
Dunlap et al. 2000, 
Inclusion of Nature in Self (INS)
Schultz 2001, 
Environmental Identity Scale (EIS)
Clayton 2003, 
Implicit Associations Test (IAT) (modified)
Schultz 2004, 
Connectedness to Nature Scale (CNS)
Mayer and Frantz 2004, 
Connectivity with Nature Scale (CwNS)
Dutcher et al. 2007, 
Nature Relatedness Scale (NRS)
Nisbet et al. 2009, 
Love and Care for Nature (LCN)
Perkins 2010, 
Connection to Nature Index (CNI)
Cheng and Monroe 2010, 
Disposition to Connect with Nature (DCN)
Brügger et al. 2011, 
Nature Connectedness Inventory (NCI)
Ernst and Theimer 2011, 
Dispositional Empathy with Nature Scale (DENS)
Tam 2013, 
The INS is a single-item instrument designed to measure the degree to which an individual includes nature as part of their identity [96, 102]. The conceptual model behind the INS recognizes ‘inclusion’ as consisting of a sense of connection (cognitive); a caring response (affective); and a commitment to action (behavioral) [28, 96, 102]. The INS invites participants to express their CWN by choosing one of seven diagrams that depict pairs of circles (i.e., one circle representing ‘Self’ and one representing ‘Nature’) with varying degrees of overlap.
The CNS is a 14-statement single-factor instrument measuring an individual’s conscious, stated level of affective relatedness, and kinship with nature . The CNS seeks to operationalize Leopold’s “land ethic”: that is, a perceived and affective sense of belonging to the natural community and a cognitive representation of “self” that includes the natural world, such that harm to nature is experienced as harm to self [9, 135]. The CNS is designed to overcome shortcomings identified with earlier CWN measures (Table 2) as well as providing an avenue for bringing less research-oriented discussions of CWN into the more research-oriented realm of psychology . The CNS has been shown to be a reliable predictor for ERB (including identifying oneself as an environmentalist) and subjective well-being (including improved life satisfaction, overall happiness, perspective-taking abilities, and resolution abilities for interpersonal problems and moral dilemmas) [7, 13, 136]. While primarily a trait measure, the CNS has also been adapted to measure CWN as a “state” response to situational factors, such as exposure to different external environments [102, 136]. Shortcomings of the CNS have been identified, including its inability to fully measure affective and experiential dimensions of CWN as intended [4, 130]. The CNS, like the INS, appears more a measure of an individual’s cognitive beliefs about their CWN but which taps into affective aspects [4, 130]. Nevertheless, the CNS’s test–retest consistency and correlation to other related instruments (Table 2) support its reliability and validity .
The NRS is a 21-item 3-factor “trait-like” measure claimed to be a more complete construct, overcoming limitations of the CNS and measuring more than environmentalism, activism, cognitive beliefs, and superficially pleasing facets of nature . It includes elements concerning physical interaction, comfort level, and familiarity with nature as well as active commitments and personal responsibility toward mitigating impacts on the environment .The NRS has been found to be valid and internally consistent, temporally stable and correlated with time spent outdoors, in nature, and with measures of environmental attitudes and behaviors . The NRS significantly predicts subjective hedonic well-being as well as eudaimonic well-being (i.e., meaning of life, positive functioning as related to, for example, personal growth, purpose in life and positive relations with others) [7, 137]. People scoring higher on the NRS (i.e., nature-related persons) are usually more open to experience, agreeable, and conscientious .
Despite various authors (e.g., [4, 13]) investigating intercorrelations between different CWN measures as a way to support the reliability and validity of their own constructs, the potential convergence (e.g., overlap in labels, scale items) or divergence (e.g., whether different aspects of CWN are captured) of CWN constructs (Table 2) has only been recently examined empirically . Tam  finds that the convergence of multiple CWN measures (Table 2) allows for CWN to be considered as a broad latent construct in itself, whereby findings can be discussed within one integrated CWN framework (as opposed to only focusing on separate associations with specific measures). In aiming to select the appropriate CWN measure, researchers can be reassured that correlations with variables will be of similar direction and magnitude across all measures . However, the divergence found between measures shows that they are not identical and, specifically, highlight that measures which are multi-dimensional (e.g., EIS, NRS) and which can tap into cognitive and affective dimensions of CWN (e.g., NRS, LCN, and possibly INS and CNS) will perform better . These findings highlight that while CWN may have many unique meanings and traits (i.e., multi-dimensional), it shares a common foundation . CWN measures could possibly be further improved by including dimensions of collective identity (as conceived in social psychology and sociology literature) [7, 138].
The instruments outlined above and those reviewed by Tam  have generally been designed for adults, although some (e.g., CNS) include adaptations for older children [102, 139]. Converting CWN instruments for use with children is problematic as statements and concepts used within various scales contain language and subtle nuances that may be beyond the comprehension of most children . Two measures explicitly developed for children are the connection to nature index (CNI)  and the nature connectedness inventory (NCI) . Both instruments draw on Mayer and Frantz’s  approach: the CNI’s 4-factor trait instrument was influenced by their definition of CWN along with other studies on environmental attitudes, while the NCI’s 11-item scale addressed the same areas underlying Mayer and Frantz’s CNS  with additional items examining children’s feelings about nature [101, 102, 139]. Survey questions that ask children about their feelings toward nature, rather than their concepts of connectedness have been found to be more successful when testing such instruments 
In applying any CWN measure, researchers need to remain aware of three potential limitations. Firstly, like all self-report measures, there is inherent uncertainty in the validity of the results produced. For example, participants may need to have an explicit belief about their relationships with nature readily available for retrieval and report without bias [12, 140]. Secondly, in noting the tendency for many CWN studies to draw on sample populations from undergraduate (often psychology) student populations [4, 7, 13, 107, 141, 142, 143], it is possible that this may constitute a non-representative sample group with specific dispositions toward CWN [12, 26]. Thirdly, the validity and transferability of CWN measures are limited by the geography of research in this field, which is primarily focussed on North America. The possibility that both the conceptual and empirical basis of the CWN construct may not be as applicable to other cultural groups is rarely made explicit, despite research highlighting cross-cultural differences in CWN [21, 144, 145, 146]. The way people experience and connect with nature is influenced by demographics (e.g., life-stage and transferability of middle-class U.S. values and lifestyle choices ); geographies (e.g., varying opportunities for contact with nature  ); and culture and language (differing conceptual constructs and collective ways of expressing the human-nature relationship [148, 149]). People from different cultures will also vary in how they understand, interpret, and express themselves when responding to surveys . We caution that Western-developed scales tested on Western-socialized individuals cannot assume compatibility with non-Western groups—language and comprehension differences aside.
In addition to recommending increased community and cross-cultural testing, we suggest that these quantitative CWN measures be complemented with qualitative techniques as part of a mixed methods approach (cf. ) for broadening and deepening the understanding of CWN. Qualitative meaning always forms the context for the quantitative and may help give insight into how knowledge, perceptions, or emotions toward nature is transformed into action [151, 152]. Incorporating phenomenological explorations alongside natural and social science methods may capture the experience and essence of CWN as it is meaningfully lived [63, 79, 121, 153, 154]. However, an individual’s ability to convey what a sense of CWN feels like or means to their life may be constrained by the limitations of language and their ability to describe it [63, 120, 148].
In this light, understandings and measures of CWN will continue to evolve. In distilling current knowledge across interdisciplinary literature, we recommend that refining and applying CWN measures will be oriented by an appreciation that CWN is the extent to which an individual’s thoughts (e.g., reflective perceptions, conscious, or implicit attitudes or cognitive beliefs) and actions (e.g., instinctive, reflexive, reasoned, or cultural practices) embody the relatedness between themselves and nature and reflect a sense of personal responsibility, respect, and reverence for all life over various temporal and spatial contexts.
Practices and Strategies for CWN (Applied)
As proposed by Saunders , the second type of research in conservation psychology is the applied component of identifying effective strategies; in this case, fostering CWN. Little empirical attention in the scientific literature has been given to context-specific strategies, practices, and actions which may be effective in helping individuals or groups cultivate CWN.
Saunders  suggests that, in addition to creating better conceptual models (about, e.g., the relationship between CWN and ERB), more applied research is needed to identify strategies which cultivate care and concern for nature. Such progress has been made with research on, for example, significant life experiences [152, 155, 156, 157], restorative qualities of nature [85, 87, 141, 158] environmental identity and place attachment [38, 105, 144, 159, 160, 161], and wilderness journeys [87, 117, 119, 162, 163, 164]. Keniger et al.’s  2013 interdisciplinary review is a helpful addition with their typology of the indirect, incidental, and intentional interactions between people and nature. The authors note that the intent behind the interaction may be pivotal in whether or how ERB is realized [11, 59, 141]. Few of these studies focus on the types and qualities of activities which may be replicated over time and space in order to foster CWN. However, a substantial body of literature related to the practice of CWN (although not always termed as such) may be found across diverse disciplines and in both scientific and informal scholarly literature. Disciplines such as ecopsychology and outdoor education have made particular advances in this applied field.
Selected competences and practices for cultivating connectedness with nature (CWN) at the individual and collective level
Practices for cultivating competences
Individual (personal routines)
Still for extended introspection/sits in nature
Engage and expand natural survival senses
Focus on nature signs: tracks, calls, phenology
Touch nature to foster subject–subject view
Sense of place
Know your area: map, wander, sit, explore
Practice inquisitive questioning, reflection
Cultivate awe, wonder, gratitude for nature
Do art, poetry, story, music, imagination, play
Experiment and improvise for self sufficiency
Participate in nature-based therapy, farming or exercise
See reality as interconnected, reciprocated
Awaken to/harmonize with earth’s language and wisdom
Collective/Group (social-cultural fabric and systems of governance)
“Invisible school” & Social networks
Recreate a supportive community-based cultural fabric for ecological learning, e.g., mentorship, nature-based schools, outdoor education and family centered activities
Citizen science/NGO participation
Promote civic engagement with field-based ecological research, with a secondary aim to cultivate naturalist intelligence and inquiry
Sustained service to the community
Endorse selfless actions which, in showing appreciation of ecology and the web of life, acknowledge that individuals have autonomy in developing a sense of identity in order to play their role or function in their ‘niche’ in serving the community at large
Eco-literacy and environmental education/action
Formulate education programs which fuse human and natural histories, and blend arts and sciences toward nature appreciation
For issues of social and ecological importance, center public dialog on a Leopoldian land ethic
Empower responsible systems which place human rights, and community-based equity at their core
Encourage place-based environmental decision-making to be locally informed and monitored in partnership with a central (governmental) agency
Consensus-based decision-making, environmental dialogs
Work toward a system of consensus decision-making, whereby consensus is the gradual process of building both understanding and commitment, which has been achieved through dialog that has satisfactorily ensured all perspectives were considered
Repair and rehabilitate areas of natural value, for reasons ecological, economic and cultural. Reinstate ecosystem resilience (as a basis for social resilience)
Collective action (with social norms and discourses)
Employ social marketing tools and techniques (e.g., using commitments, norms, prompts, goal setting, incentives, motivational messages and social diffusion) to shape the prevailing social norms and discourses such that they align with CWN and promote ERB and collective action
At the individual level, CWN practices are often encountered as part of (semi-)structured workshops and/or reflective retreat settings. These events, usually nature-based, are possibly inspired by deep ecology (including, e.g., depth psychology, emotional releasing, eco-spirituality) Eastern-style relaxation and mindfulness (e.g., yoga, meditation, breath-work), Indigenous worldviews, rites and traditions (e.g., vision quests, shamanism) and/or any (neo-paganesque) combination of these [43, 54, 165]. Semi-structured CWN practices or spontaneously arising opportunities (e.g., through unstructured activity) may form part of wilderness journeys; outdoor adventure activities; ecotourism; environmental/sustainability education and interpretation; nature-guided therapy, spiritual/cultural/religious gatherings or celebrations and their inherent ritual/prayer/ceremony; community, seasonal or environmental festivals (and including creative arts such as drawing, dance, music, drama, play); environmental activism; community gardening; and voluntary simplicity/eco-lifestyle movements [43, 165]. Within many of these contexts, nature is understood as the teacher, healer, or inspiration, while the outdoor educator, guide, or facilitator is tasked to enable, cocoon, or help manifest learner’s insights and experiences .
Key concepts for consciousness and CWN
Despite scientific advances, consciousness, as a real phenomenon with a rational biological explanation, remains elusive, perplexing, and mysterious [60, 72, 73, 74]. The term “consciousness” is ambiguous since it is used across multiple contexts and with reference to multiple phenomena, (e.g., “awakeness,” “to be conscious of something,” “to know about something,” or to refer to cognitive or attention capacity [75, p. 6]). For the purposes of this review, the following traits of consciousness are of specific relevance:
(1) Perception Perception may be understood as either primary sensory perception (the “experiencing self”  in the present) or secondary reflective perception (“remembering self”  in the past). Both types of perception are conventionally classified as cognitive functions since an individual’s pre-existing cognitive concepts are used to frame, compare, and interpret incoming information which, in turn, form part of the complex process of mental model building in consciousness [76, 77, 78]. However, primary and secondary perception may have different but complementary applications for CWN, with primary perception mostly relying on embodied sensory awareness and secondary perception mostly employing conceptualized memory recall. In terms of CWN, it may therefore be more illuminating to make the distinction in consciousness as either :
(i) Phenomenal: primary sensory perception in immediate experience as mediated by the body
(ii)Psychological secondary reflective perception in memory as mediated by conceptual processes of the mind (e.g., mental models and memory recall)
Despite being intimately entwined, both forms of perception should be considered when attempting to understand the disconnect from nature and the ways in which these forms perception might be influenced to cultivate a consciousness conducive to CWN
(2) Experience Consciousness is a product of an individual’s accumulated diverse experiences—being conscious of the world allows one to survive in it, experience it, and endow it with meaning [63, 72, 73, 74, 76, 79]. Experience, as it relates to consciousness and CWN, involves a personal encounter or event that is perceived and lived through; the senses organizing and interpreting stimuli (phenomena) in the external world [63, 76, 78]. Perception is a mode of human experience as well as a prerequisite for other forms of experience (e.g., bodily, imaginative) that form consciousness [73, 76]
(3) Attention Consciousness is always directed toward something. This self-willed intentionality—or directed attention—is the effortful, conscious process of utilizing cognitive resources to focus perception on selected stimuli, while filtering, diluting, or avoiding distraction from unrelated, irrelevant, or competing stimuli [27, 80, 81]. This determines what, how, and for how long a person gives something attention, whereby choices feedback and determine the content of everyday consciousness (i.e., experiences) . Neuroscience demonstrates that an individual’s focus of attention determines the strength of brain synapses and the size of cortex areas [82, 83].The capacity for humans to direct attention in this way appears to serve as (i) a coping mechanism to avoid the senses being overwhelmed and fatigued from all the stimuli (noise) in perceptual experience [76, 84, 85, 86] and (ii) an evolutionary tool allowing humans to pay attention to phenomena that may impact upon survival or involve problem solving, but which requires effort to sustain attention (e.g., listening for sounds of predators ). In both cases, considerable (mental) effort is required to resist distractions from more potent stimuli 
CWN may also be (often less intentionally) achieved through more conventional means. Hands-on involvement in ecological restoration can be particularly beneficial in fostering CWN, since it involves an attentiveness to nature in an active embodied way, engaging body and mind and absorbing the wisdom inherent in the restoration process [69, 85, 88, 160]. Similarly, experiential citizen science may serve as a vehicle for promoting CWN, and increasing the likelihood people will engage in ERB . The rise of social media is supporting a proliferation of “apps” which may enhance eco-literacy by encouraging people to identify, record, and report their nature sightings. As part of a balanced “screen diet” , nature-focused apps may serve as an important initial step in turning people’s attention toward the nature around them. Cultivating conventional naturalist skills such as bird-watching, plant drawing and identification, ecological mapping (including sounds), animal tracking and acute, silent observation can all be highly beneficial activities for finding CWN [34, 170]. These exercises can bring people into closer contact with wildlife, which has also been shown to help foster CWN [28, 116].
Some of these practices for individuals (or small groups of individuals) might also fall under the umbrella of “green care” as outlined by Hine . Green care initiatives usually consist of a facilitated therapy or intervention (e.g., therapeutic horticulture, animal assisted interventions, care farming, green exercise as a treatment, and eco-, nature-, or wilderness-therapy) for a particular participant(s) (i.e., there may be person-specific needs or outcomes in mind) .
At the collective or group level, Pyle  addresses CWN by offering a blueprint for governance through a six-point “nature matrix.” The nature matrix is primarily embedded in a Leopoldian and biophilia ethic and, while an explicit statement on the desired outcomes is lacking, reference is made to broad-scale, community-based restoration efforts, mass campaigns for promoting ecological literacy and, a cultural shift beyond capitalism’s obsession with perpetual growth . Pyle  see these basic tenets, alongside nature-based people’s desirable way of being, as necessary for a “radical reconnection.” The nature matrix is a call-to-arms for policy-makers, although few will likely have the courage, knowledge, or political wherewithal to initiate such bold changes . Pyle admits that the nature matrix may be utopian but that it is nevertheless “a model for essential, incremental change, a dream whose eventual adoption may enhance chances for reconnection and for ecological survival itself” [2, p. 206]. Based on the premise that humans are “wired” for connection and belonging (see below), it follows that the design of an appropriate social-cultural fabric should enable a process of CWN to unfold automatically .
This incremental but vital process requires engagement across all sectors . Intermediary organizations (e.g., schools, universities, NGOs, community groups), educators, mentors, and families will need to play a prominent role in bridging the individual and group progress toward CWN  (Table 3). This will require stakeholders to find collaborative ways of overcoming identified challenges for reconnecting. For example, England’s Natural Childhood Inquiry revealed that an unreasonable health and safety culture; traffic dangers; the rise of indoor entertainment; finding time and space for nature in schools; receding access to quality green and natural spaces; and socio-economic and cultural factors are the key barriers preventing or limiting childhood CWN [102, 172]. It is therefore necessary that local groups (including schools and higher educational institutions) are supported to become catalysts for local action, thus enabling all citizens (and students) to have meaningful engagement with nature .
Practices outlined in this section are neither exhaustive nor static. For example, Naess [105, p. 140] lists 25 other ways (i.e., behaviors) that supporters of deep ecology “can joyfully adapt their lifestyle to the movement” with many of these orientations clearly aligned with (outcomes of a) deepening CWN. Therefore, the above section serves to introduce common themes which might be seen as necessary in fostering authentic CWN. They may help to balance, mitigate, and make sense of undesirable events, patterns, and changes in one’s life. Ideally, CWN practices help persons awaken to a deeper appreciation, care, compassion, and empathy with nature—realizations of such connections are at the essence of true systems thinking .
Measuring Success (Evaluative)
As Saunders  conceived it, the third research area for conservation psychology is evaluative (i.e., measuring success). This is also where the scientific literature seems to fall short. Given that there is little evidence for implementation of CWN strategies in practice (in either conservation or formal education), it follows that there is little information on their effectiveness in the instances where CWN strategies or practices may have been systematically applied . While valuable evaluative research on the effect of (semi-)structured experiences in nature exists (e.g., [87, 117, 119, 157, 162, 163, 168, 173, 174, 175, 176, 177, 178], there appears to be a paucity of literature which (1) specifically targets the CWN construct as part of an intervention or implementation strategy; (2) has clearly defined a priori indicators on what constitutes “success”; (3) has sufficient evidence as to whether CWN programs are achieving results ; (4) identifies CWN threshold levels for precipitating desired levels of ERB; or (5) is based on longitudinal analysis. Empirical research and evidence-based criteria are needed to address these current shortfalls.
Evaluative indicators for CWN may be extracted from existing quantitative instruments (Table 2). The 21 statements in the NRS offer a range of cognitive, affective, and experiential traits which provide useful points of reference. For example, after engaging with CWN activities over time, do persons: go outdoors more often (even in unpleasant weather); take more notice of nature around them; feel more comfortable in wilderness areas; feel more aware about environmental issues; and give greater consideration to how their actions affect the environment? Similarly, the INS, which uses overlapping circles to depict one’s cognitive representation of self in relation to nature, may provide reliable feedback on how a persons’ perception of their inclusiveness with nature has changed over time (e.g., in response to CWN practices). The potential of existing CWN scales to measure progress in CWN is largely beyond dispute—many were developed with this goal in mind. However, for the purposes of effective evaluation for an individual or groups of individuals, the content comprising these measures needs to be made explicit, along with weak areas (i.e., statements registering low scores) in participant responses so activities can be adapted to improve the effectiveness of the CWN (intervention) strategy. Note also that since existing CWN measures are self-report, persons may be unaware of ways that they have changed (in favor of CWN) even though such traits may be evident to others.
Evaluative indicators may need to be more qualitative, particularly as they relate to education and learning outcomes. If CWN is recognized as being fluid, holistic, and personal, then it follows that the means of assessing success must be equally so. To this end, Young et al. [31, p. 258] propose indicators (“natural, vibrant, vital, and sustainable criteria”) which while not comprising a strictly quantitative assessment, instead act as radical beacons for orienting and assessing successful education outcomes which serve to inform three core fields of learning: awakening sensory awareness; cultivating knowledge of place; and restoring the human bond with nature . These all contribute to fostering a “naturalist intelligence” [cf. 205, 206].
Evaluative indicators for CWN may also be aligned with the associated well-being benefits described below. Heightened CWN may be recognized in persons displaying attributes and traits of personal growth and health and well-being (e.g., inner happiness, peace-of-mind, presence-of-being, heightened attention and awareness, love and forgiveness, aliveness and vitality, curiosity and inquisitiveness, physical and mental resilience, generosity and gratitude, empathy and feelings of belonging, relatedness, and oneness [32, 97, 100, 101, 127, 137, 153, 179, 181]).
As indicated in the theoretical conceptualization of CWN, a level of consistency and commitment is required. This continuity also implies that an individuals’ CWN is transferable between contexts even when the context is less favorable or appealing. This differentiates between persons exhibiting CWN with those who are more prone to biophobia  or inclined to only seek out aesthetically pleasing nature or have a preference for charismatic species . Finally, “continuity” also implies that CWN is relatively resilient to external shocks, stressors, or adverse situations (e.g., natural disasters) over varying temporal and spatial scales.
Actions and behaviors will need to comprise any evaluative indicator set, although CWN may not always be reflected in an individual’s everyday actions [4, 13]. Fundamentally, behaviors should move beyond transient instrumental actions which might be motivated by tangible (e.g., economic incentives) or egoist (e.g., social status/image) concerns. It is expected that salient qualities of CWN would encourage individuals to embrace “voluntary simplicity” in reducing their ecological footprint (e.g., consumption levels) . This lifestyle choice has long been advocated as a necessary step toward ecological sustainability and human well-being . Conversely, fulfilling commitments and incremental actions consistent with CWN may become operationalized as a regular behavior (i.e., habit) which, in turn, reinforces the cognitive and affective associations with CWN and further shapes an ecological consciousness [11, 28, 185]). Ultimately, at the collective level, a community of enlivened appreciative individuals living with social-ecological sensitivity and purpose may indicate an emerging culture of connectedness.
CWN is not a prescribed formula, blueprint, or roadmap. Neither is it a seamless unidirectional “onward and upward” path toward utopian being: fluxes (as ebbs and flows) and cycles are intrinsic to life itself. As a deeply personal and a uniquely experiential endeavor, CWN is necessarily nuanced by time, space, and contextual variables. The process may be characterized by sustained practice which can result in sudden progressive shifts or, alternatively, prolonged periods of relapse but which may nevertheless be valuable as “regressions in service of future expansion and integration” [66, p. 163]. In all cases, there is much scope for investigating the reliability, validity, and applicability of potential indicators as contextual understandings of CWN and its relevance to conservation and education evolve.
Benefits of CWN
Numerous studies and reviews illustrate that contact with natural environments is beneficial as measured by multiple variables pertaining to physiological, emotional, mental, social and spiritual health, and well-being [3, 27, 48, 59, 88, 102, 108, 111, 113, 121, 186, 187]. In their typology of the benefits from interaction with nature, Keniger et al. . illustrate the vast diversity and range of benefits: from individuals factors such as improved cognitive, cardiovascular and immune functioning [3, 27] to collective benefits such as reduced crime, aggression, and antisocial behavior [3, 113]. These effects, especially the therapeutic and restorative effects of nature on humans [3, 27, 85, 121, 158, 171], are often linked back to the biophilia hypothesis and/or Attention Restoration Theory [27, 81, 85, 102, 107, 113].
Researchers find that green outdoor settings reduce symptoms of attention-deficit/hyperactivity disorder (ADHD) in children significantly more than activities conducted in built outdoor or indoor settings [188, 189]. Green space settings have been found to positively influence (inner city) children’s level of creative play  and the naturalness of views of nature from home predict self-discipline (e.g., children’s performance on tests of concentration, impulse inhibition, and delay of gratification) . In these latter studies, vegetation cover and naturalness of the view could be used as predictors for outcomes. This may have implications for CWN.
Nature exposure does not necessarily translate to CWN (Fig. 1); however, various studies show CWN constructs to be positively correlated to similar variables pertaining to physical and psychological well-being (e.g., mindfulness, meaningfulness, self-actualization, happiness, and vitality) [13, 99, 107, 113, 136, 159, 168, 178]. Under certain conditions, CWN acts as a trigger for spiritual, self-transcendence, and unifying experiences [28, 47, 87, 153, 154, 192]. CWN is considered causal in generating psychological benefits because of the “power of the feelings associated with belonging to a community or something ‘greater than oneself’” [26, p. 129]. In this sense, nature has a transformative value as it appears that humans become their highest selves when they “stretch out” of themselves and appreciatively value others (i.e., non-humans). [118, 193] CWN seems to also offer a “distinct happiness benefit” in that it remains a unique and independent predictor when controlling for other powerful subjective connections (e.g., social bonds) and predictors of happiness . Overall, CWN appears to make our lives happier and more purposeful, fulfilling, and meaningful [4, 99].
While these well-being benefits are sufficient motivation in themselves to encourage individual engagement with nature, the litmus test for CWN’s relevance to conservation is the extent to which it can foster ERB, as a prerequisite for influencing social norms, and inspiring collective action [19, 49]. A number of studies suggest that affective experiences in nature can predict ERB [32, 98, 121, 141, 159, 194]. The direct experience of engaging with nature facilitates emotional bonding and stronger behavioral consistency toward the object [88, 195]. As a positive emotional experience, CWN can initiate changes in cognitive or perceptual processes and, when embedded in feelings of relatedness beyond self (i.e., an “ecological self” which broadens identity formation to include nature and associated biospheric value concerns [88, 196]), CWN presents a platform for ERB as part of a sense of personal obligation to bring such feelings into everyday life practice [12, 13, 24, 88, 122]. These affective connections have been shown to be an independent predictor of intentions to engage with nature [98, 159], including children’s intention to participate in nature-based activities in the future . While it is possible that ERB also promotes CWN (i.e., they are mutually reinforcing) , empirical research demonstrates CWN to be a strong predictor for sustainable attitudes, concerns, motivations, actions, and lifestyles even when controlling for other attitude measures which do not include a sense of connectedness [4, 7, 13, 49, 108, 113, 160]. For example, a recent study found that CWN was a stronger motivation for visiting parks and interacting with green space than simply having the opportunity to do so . ERB is more likely when a person’s “heart is in it” [49, p. 299]—and the heart usually engages through direct sensorial and emotive experience. Wilson (in ) advises that we would be wise to listen to the heart—and to then act with rational intent.
According to the conceptualizations of CWN as outlined in this review, there appears to be few detriments of CWN (for Westernized persons) as identified in the literature. While one may have psychologically and genetically predisposed fears toward certain elements of nature as part of humanity’s entwined evolutionary history with the natural world [182, 198], it would be erroneous to confuse this biophobia as a negative aspect of CWN. While one may still (innately) fear or dislike certain phenomena in nature, CWN gives context and perspective to biophobic reactions in accordance with understandings implicit in CWN, for example, inclusiveness, relatedness, and the associated respect and reverence held for all life.
Perhaps the greatest scope for adverse effects associated with CWN is in witnessing the desecration of nature and experiencing the trauma, grief and despair associated with that (e.g., when a place of profound childhood significance is destroyed or when one is forcibly removed from areas to which one had an emotional and/or spiritual attachment) [199, 200]. However, in reviewing literature on how afflicted children cope in the face of conflict and disasters, Chawla  finds substantial evidence to support the buffering, therapeutic, and healing effects of nature and that memories of a deep connection with nature during childhood were a “fund of calm” which could be drawn upon later in life to help (re)discover self and (re)imagine new futures (e.g., [202, 203, 204, 205] ). Such benefits are also concomitant to the adaptive processes (across multiple levels, e.g., physical, psychological, social-cultural, and institutional functioning) which are necessary to form and sustain resilient systems .
CWN in Conservation: Possible Avenues for Integration
Knowing the value of CWN is insufficient in its utility for conservation—it must be applied in doing conservation [8, 18, 206, 207]. Francis Bacon (1561–1626) and Neo-Confucian philosopher Wang Yang-Ming (1472–1528) imagined the same when they suggested that “good knowledge” is that which combines knowledge with action [208, 209]. If one knows they should implement an action, and does not do so, then their knowledge is incomplete and they do not truly know: “Knowing is the beginning of action, and doing is the completion of knowledge” [211, p. 29]. Despite what we know, the action of CWN receives little attention in the scientific literature and the insights that are available in fields such as ecopsychology and outdoor learning rarely find their way into conservation mainstream. This is partly because conservation biology has struggled to effectively integrate and prioritize social (e.g., psychology) processes for research and practice [49, 210, 211, 212], in curricula at universities  and/or because of the handicaps imposed by the “boundaries of our disciplinary homes and frameworks” [21, p. 137]. Using the concept of CWN to implement more effective conservation actions underscores the need for interdisciplinary thinking, collaboration, and transdisciplinary approaches which, in bridging science and society, may more effectively inform conservation practice and education [19, 214, 215, 216, 217].
CWN may answer a call for more compelling language in conservation [16, 19] Conservation efforts aimed at fostering ERB have largely focused on information-rich campaigns which are often poorly conceived and targeted, given that knowledge about an issue alone is unlikely to change behavior [11, 29, 30, 49, 132]. Conservation has generally excelled in articulating ecological crises . While this knowledge and awareness are necessary, an overemphasis on biodiversity loss (e.g., “gloom and doom” campaigns which may resemble Christian narratives of an imminent Apocalypse requiring humanity to repent their ecological sins ) and other crisis-driven scenarios is failing to improve the effectiveness of conservation initiatives or motivate an indifferent public [69, 136, 219, 220, 221]. Individuals may respond to negative messages invoking guilt and fear but the eventual outcome may be denial, frustration, and disempowerment . The perception of “crisis” may even make people more conservative and change resistant . People may thus be more motivated to conserve nature when presented with understandings of how CWN contributes to health and well-being . Because the benefits of CWN are available to all persons, language used in communication can be tailored to be more inclusive. This may be more effective in engaging the public and might counter environmentalism as being perceived as only a “special interest” .
CWN may build hope and resilience The crisis addiction mentality pervading sectors of the conservationist community resembles “post traumatic embitterment disorder”—a violation of basic beliefs resulting in feelings of bitterness, unfairness, and hopelessness and a conviction that the world, not them, must change [223, 224]. This “conservation grief” has been facetiously compared with Kübler-Ross’ five stages of death and dying [225, 226]. Since a desire to protect nature without CWN may hinder well-being, the benefits of CWN may buffer the distress accompanying an awareness of environmental crises or serve as a reserve of inspiration to be drawn upon in times of hardship . As Thomashow  recommends, the combination of intimate experiences with nature and deep self-reflection is necessary to the “wisdom training” needed to liberate the anger and despair often associated with environmental neglect and destruction. Yet many environmentalists are unwilling to confront such emotions because they are unaware of how to do so . In providing such an avenue, CWN can cultivate more positive feelings for how we practice conservation and, in bettering ourselves, ultimately, inspire change in others. There is always a need to balance hope with realism ; however, alongside the promotion of “know-how” and behavior alternatives, CWN (as part of a placed-based education) remains critical in ensuring success in conservation [6, 221, 228].2
CWN may constitute a more enduring and far-reaching motivation for ERB CWN promotes more than instrumental actions aimed at fostering ERB. This is important because it cannot be assumed that perceived ERB in one area of a person’s life is driven by motivations which will be transferred to other lifestyle choices, and thus fail to reproduce similar ERB outcomes or capture an overall “net-gain.” This is particularly relevant in the face of transient economic incentives or other short-term benefits. Rather than educators or decision-makers being forced to choose between instrumental (behavior change) and emancipatory (human development) strategies , promoting a CWN rooted in direct affective experience is likely to motivate and empower environmental awareness and ERB across the board [88, 173, 197, 230]. Given these prospects, along with the other potentials outlined in this review, CWN presents itself as more than just another “conservation fad” [cf. 231] and more of a moral and ethical sensibility.
CWN may provide an accepted avenue for tackling “the big fuzzies.” A 2011 survey of scientists’ opinions revealed a concerning dichotomy: while understanding human interactions with nature was ranked as the highest priority for conservation planning, the role of spiritual, cultural, and utilitarian values as reasons to conserve biodiversity were ranked poorly . This is precarious, because it disconnects science from value-laden practice—a practice that must be inclusive if it is to be successful. This is a process of finding out “who speaks for nature”  and acknowledging that other ways of knowing and relating to nature may be more appropriate under specific contexts. However, doing so is likely to invoke “big fuzzy concepts”: that is, issues where values and ethics are difficult to define, access, and measure, and therefore tends to be avoided by conservationists [234, 235].The risk in this approach is that it may undermine “conservation opportunism”  since spiritual and cultural components of CWN may be powerful motivations for conserving nature in certain contexts . Many writings have investigated the role of religion and spirituality in supporting the conservation of bio(cultural) diversity and the role of science and education therein [125, 237, 238, 239, 240, 241, 242]. Such discussions broach issues not usually discussed in mainstream conservation: for example, sacred connections with land, the spirit of place, the role of ritual (including religious ceremony) in nourishing earth and ourselves, and how vicarious childhood experiences opens paths toward CWN in adulthood [155, 165, 202, 243, 244]. While such topics still sit uneasily at the fringe of the natural sciences, CWN may provide the necessary framework and language through which diverse perceptions, emotions, and experiences of nature may be scientifically legitimized, accounted for and harnessed for effective conservation practice.
CWN is intrinsic to evolutionary perspectives of humans and the natural world The call to “reconnect with nature” is often grounded in the realization that human evolution is intimately tied to the natural environment since, throughout most of history, humans have subsisted in wild and rural areas by hunting, gathering, herding and, more recently, producing with agriculture [59, 160]. Such notions are not new to science and the Origin of Species  inextricably tied humans to nature through biology and genetics, presenting a new perspective of an interconnected world . However, Darwin’s view was rooted in a physical, and usually tangible, reality and was less forthcoming on the psychological ways in which humans have evolved with nature. In environmental literature, the biophilia hypothesis presented a significant breakthrough in this realm by contending that humans are biologically and psychologically predisposed to affiliate with the natural world [3, 7, 57, 246, 247].
Biophilia describes the connections that humans instinctively seek with the rest of life as an innate love or affection  or, alternatively, as a learned responsibility for nature . While these traits may be neither strictly innate nor acquired, fixed, or universal , research shows that dimensions of human biophilia are also shared with living non-human primates . Non-human primates are keenly attuned to their natural habitat, experts at deriving value from it and “display a propensity for emotional learning and kinship” [44, p. 16]. It is therefore clear that the evolutionary experience of humans involves nature and “we are therefore predisposed to resonate with these surroundings, consciously or not” [26, p. 121].
Finally, psychology research demonstrates peoples’ basic and evolutionary need to “belong” as a valued member of a community: group identity (e.g., with family, friends, neighbors, social networks, special interest communities) provides a sense of purpose and facilitates connection to people and place [13, 27, 160, 250, 251]. Our burgeoning engagement with social media may represent one way through which this connection and belonging is sought . This thirst for new forms of social connection is perhaps also a subconscious attempt to fill a psychological emptiness resulting from a growing physical separation from nature . CWN compels us to consider our evolutionary needs—from inseparable ecological and social perspectives .
Educating for CWN: A Radical but Relevant Prerequisite for ERB
Internal factors are driven by motivations within which environmental values and beliefs are key—that is, those correlating with specific environmental attitudes or biospheric and intergenerational concerns [12, 32];
Promoting and educating for CWN can therefore foster effective conservation practice .
Accepting this logic is to equally accept that CWN is a core concern of conservation biology, psychology, and education. It represents a truly interdisciplinary process and endeavor.
Some may consider that the theory and practice of CWN resembles a return to pre-scientific animism and an idealization of our hunter-gatherer roots. This is confrontational to formal contemporary education systems that have consistently rejected non-Western ways of knowing [255, 256]. Pyle [2, p. 209], however, believes that “Reconnecting with nature is not a matter of reversing the fall, getting back to Eden, or approximating the peaceable kingdom. These states never occurred.” Clearly, a return to idealized subsistence living is near impossible since we cannot unlearn all we now know (about, e.g., human developmental potential), reverse technological advancement, restore ecological integrity or recreate the strong social bonds which supported old formulas that were more pertinent when the world was very different to now [88, 257, 258].
Similarly, CWN may seem to reinvent a Romanticism which, while emphasizing strong personal relationships with nature, may have instead contributed to a distancing of human-nature relations [61, 63]. While contemporary views seek to reassert the corporeality and earthliness of life (rather than the ethereal) [63, 259], such associations remain threatening to belief systems that might view CWN as an “ersatz religion” [cf. 172]. White  pursued a similar aim decades ago: rather than seeking to eject Christianity, he sought a viable equivalent to animism which carried a message of stewardship, humility, and care for creation .Ultimately, this is not a question of exchanging one way of life for another but instead invites an opening up to the potentiality which can be harnessed from established points of reference .
In the context of conservation education, it appears that “The only reconnection that will be truly significant must also be radical” . “Radical” is relative and therefore ambiguous but it is evident that humans need to rediscover a “consciousness of place” that recognizes a living interconnected earth, yet retains scientific credibility [88, 221]. A scientifically validated avenue toward embarking on this radical process might best begin with consciously shifting perception, attitudes, and behavior to align with statements contained within CWN measures (e.g., CNS, NRS). This may instigate a cognitive shift toward perceiving relatedness, interdependency, and eventually, intuiting or feeling a part of the web of life . However, we can no longer rest with the hope that CWN may only be realized through intellect. At a minimum, experiential education for CWN should encompass sensory awareness and emotional bonding through nature- and place-based immersion—indeed this might be the only way in which perceptions can be transformed [88, 221, 261]. CWN might be viewed as a “natural sensory science” which, as a trans-discipline, integrates behavioral and perceptual development with (environmental) education, (human) ecology, and (eco)psychology as part of a conservation renaissance [167, 262].
A thirst for knowledge and empirical evidence should not stifle progress: we know enough to act with fervor. Waterhouse [263, p. 1090] recommends: “Find a place in the natural outdoor world and just be there for an hour” and “find your spot to watch and listen to nature, in solitude, and reconnect.” Environmental education has long sought to promote ERB but has only achieved limited success ; CWN promises more effective and enduring outcomes [12, 63, 98, 230]. However, expertise from conservation science, psychology and education may be critical in providing the practical “know-how” (e.g., training) to support and translate CWN into action [62, 175, 209]. In all cases, CWN appears an essential vehicle for implementing effective stewardship measures now and into the future . As Swaisgood and Sheppard [6, p. 95] ask “If people don’t connect with nature, where will our next generation of environmental stewards come from?”
This review emphasizes the need to prioritize CWN in conservation discourse. It demands reflection on the cognitive, affective, and experiential dimensions of CWN when designing education strategies and curricula [173, 180, 264]. It urges dialog on CWN conceptualizations, activities, and indicators to guide effective implementation. It invites exploration on the types of meaningful nature experiences that are capable of grounding CWN in childhood and cultivating it throughout adulthood [115, 202, 244]. It also presents itself as a radical but necessary call for conservation and education professionals to promote the theory (knowing) and embody the practice (doing) of CWN as a precursor for both ERB and enhanced well-being. Doing so should enable these persons to become better role models and sources of inspiration for sustainable living; after all, if conservationists cannot commit to CWN, who will ? Ultimately, the call to reconnect with nature invites a response in individual and collective consciousness: an intentional and experiential process aimed at revitalizing the human-nature relationship.
The etymology of “spirituality” is related to the Latin spiritus meaning "soul, courage, vigor, breath" and spirare "to breathe" . “Inspiration” is therefore the act of ‘breathing in,’ to be animated by something of power (e.g., ‘God’) . In terms of CWN and spirituality, it is also important to distinguish between: spiritual ethos/belief (primarily cognitive); spiritual experience (primarily affective); and spiritual practice (primarily experiential and behavioral) as symbiotic components of one’s “spirituality” .
Note that notions of connection in conservation science are already commonplace, although these usually refer to “ecological connectivity” [298, 299, 300] which is concerned with protecting, restoring and improving ecological processes to build resilience in the face of external stressors . However, as part of efforts to bridging disciplinary terminology and seek shared and inclusive understandings, CWN could also be conceived as restoring and improving physiological and psychological processes to build personal resilience in response to stressors associated with urban life or being a conservationist in a time of ecological crisis.
Thank you to Melissa Hatty, two anonymous reviewers, and the handling editor for detailed comments and valuable input on earlier drafts; the Wildlands Studies Australia 2012 class for helpful reflections on CWN, particularly to Guido Chiappa and Ilana Copell; the DST-NRF Centre for Excellence in Invasion Biology which funded the overarching PhD research; and TsamaHUB’s Transdisciplinary Doctoral Programme in Sustainability (Stellenbosch University) which housed this PhD research.
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