The Development of the Turkish Social Media Craving Scale (SMCS): a Validation Study

Over the past decade, the use of social media applications have increased worldwide. In parallel with this, abuse of social media has also increased. In recent years, many disorders related to social media use have been conceptualized. One of the common consequences of these disorders is the intense desire (i.e., craving) to use social media. The aim of the present study was to develop the Social Media Craving Scale (SMCS) by adapting the Penn Alcohol Craving Scale (PACS). The study comprised 423 university students (242 females and 181 males) across five different samples. The psychometric instruments used included the Social Media Craving Scale, Social Media Disorder Scale, Brief Self-Control Scale, and Personal Information Form. In the present study, structural validity and reliability of the SMCS were investigated. The structural validity of SMCS was investigated with Exploratory Factor Analysis (EFA), confirmatory factor analysis (CFA), and criterion validity. The reliability of SMCS was evaluated using Cronbach α internal consistency reliability coefficient, corrected item total correlation coefficients, and test-retest method. As a result of EFA, the SMCS was found to be unidimensional scale. This unidimensional structure explained approximately half of the total variance. The unidimensional structure of SMCS was tested in two different samples with CFA. As a result of CFA, SMCS models were found to have acceptable fit values. The criterion validity of the SMCS was evaluated by assessing social media disorder, self-discipline, impulsiveness, daily social media use duration, social media usage history, frequency of checking social media accounts during the day, number of social media accounts, and number of daily shares. Analysis demonstrated that the SMCS was associated with all these variables in the expected direction. According to the reliability analysis (Cronbach’s α internal consistency coefficients, corrected item total correlation coefficients, and test-retest method), the SMCS was found to be a reliable scale. When validity and reliability analyses of the SMCS are considered as a whole, it is concluded that the SMCS is a valid and reliable scale in assessing social media craving.


Introduction
Over the past 20 years, worldwide internet use has increased. As of 2018, more than half of the world's population has access to the internet. This number is reported to be approximately four billion (Kemp 2018). Coupled with this, the use of social media has also increased. According to the current data, 39% of the world's population is an active mobile social media user (Kemp 2018). The average use of social media in Turkey (where the present study was carried out) appears to be above the world average with 63% of Turkey's population being active social media users. In addition, the internet is often used for social media in Turkey (Kemp 2018;Turkish Statistical Institute, 2017). As of 2018, the average daily use of social media in Turkey was 2 h and 48 min. Facebook, YouTube, WhatsApp, Facebook Messenger, WeChat, QQ, and Instagram are reported as the most popular social media applications respectively (Kemp 2018).
As the use of social media applications has increased, social media abuse has also increased. In the literature, a number of alleged disorders arising from social media have been conceptualized including social media addiction (Andreassen et al., 2017), social media disorder , excessive social media use (Griffiths and Szabo, 2014), problematic social media use (Meena et al., 2012), compulsive social media use (De Cock, Vangeel, Klein, Minotte, Rosas, and Meerkerk 2014) and pathological social media use (Holmgren and Coyne 2017). Although there are differences in names, there appear to be common criteria for social media use disorders. Most of these conceptualizations emphasize salience, mood modification, tolerance, withdrawal symptoms, conflict, and relapse. Indeed, scholars such as Griffiths (2013) identify social media addiction with these six criteria. In addition, van den Eijnden, Lemmens, and Valkenburg (2016) identifies social media disorder/ addiction using nine criteria (preoccupation, tolerance, withdrawal, persistence, displacement, problems, deception, escape, and conflict). Although social media addiction is not formally classified in the latest (fifth) edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5; American Psychiatric Association [APA], 2013) it has been conceptualized as a behavioral addiction in the literature (Andreassen and Pallesen 2014;Griffiths 2013;Kuss and Griffiths 2011a;Griffiths, Kuss, and Demetrovics 2014).
Behavioral addictions can be similar to substance addictions in many ways including natural history, phenomenology, tolerance, comorbidity, overlapping genetic contribution, neurobiological mechanisms, and response to treatment (Grant, Potenza, Weinstein, and Gorelick 2010;Griffiths 1996;Griffiths 2005). In addition, behavioral addictions typically involve an urge or craving prior to engagement in the addictive behavior, similar to substance addictions (Grant et al. 2010). In this context, the empirical research demonstrates that social media addiction has common characteristics with both behavioral and chemical addictions He, Turel, and Bechara 2017;Hormes, Kearns, and Timko 2014).
Social media addiction has been defined in the literature in different ways. Social media addiction has been defined as the problematic excessive use of social media comprising (i) an increase over time in the desire to use social media, (ii) important educational and/or occupational activities being neglected, (iii) harming personal relationships, (iv) using social media to escape from daily life stress and negative emotions, (v) experiencing problems in reducing or stopping social media use, (vi) becoming tense and irritable when social media cannot be used, and (vii) lying about the duration of social media use Griffiths 2013;Kuss and Griffiths 2011a;Kuss and Griffiths 2011b;van den Eijnden et al. 2016). Research has shown that social media addiction is related to psychopathology (Hormes et al. 2014;Koc and Gulyagci 2013;Meena et al. 2012;Pantic et al. 2012), reward and punishment systems (He et al. 2017;, sleep disorders (Levenson, Shensa, Sidani, Colditz, and Primack 2016;Woods and Scott 2016), academic performance (Huang 2013;Huang and Leung 2009), loneliness (Huang and Leung 2009;Yıldız-Durak 2018), narcissistic personality (Andreassen et al. 2017;Ryan and Xenos 2011), behavioral addiction (Griffiths 2013), impulsivity (Savci and Aysan 2016), relationship dissatisfaction (Elphinston and Noller 2011), social connectedness (Savci and Aysan 2017;Savci, Ercengiz, and Aysan 2018), and disorders related to the use of digital technology such as internet addiction (Guedes et al. 2016), fear of missing out (Blackwell, Leaman, Tramposch, Osborne, and Liss 2017), internet gaming disorder (Pontes 2017), and phubbing (Karadağ et al. 2015). In this context, it can be said that social media addiction has a broad etiological spectrum.
Social media has important functions in establishing close relationships, seeking new social networks, and initiating and maintaining relationships. Individuals have the opportunity to easily share their thoughts, feelings, mood, and status with others via social media. Social media can show that people are liked, approved, and accepted within a short timeframe . Even if there is no problematic social media use, the desire and craving to use social media can still emerge as a result of these social functions. However, the desire and craving to use social media derives from the addiction literature (Griffiths 2013;Kuss and Griffiths 2011a). Furthermore, the desire to use social media has been conceptualized as a craving for social media (Hormes et al. 2014). More generally, craving defined as "a strong desire/urge" to use a substance (APA 2013) or as "a strong desire or sense of compulsion" to use a particular substance (World Health Organization [WHO] 1993). Although the concept of craving has traditionally been used for substance abuse and dependence, it has increasingly been used for behavioral addictions in recent years (Grant et al. 2010). Craving has started to play an important role in behavioral addictions such as gambling addiction (Young and Wohl 2009), internet gaming disorder (Dong, Wang, Du, and Potenza 2017;Shin et al. 2018), pornography addiction (Kraus and Rosenberg 2014), food addiction (Rogers and Smit 2000) and social media addiction (Hormes et al. 2014;Turel and Bechara 2016;Wegmann, Stodt, and Brand 2015). Therefore, it can be said that the concept of craving is not limited to substance abuse and dependence.
There are numerous scales in the literature that assess disorders related to social media use including (among others) the Facebook Addiction Scale (Andreassen, Torsheim, Brunborg, and Pallesen 2012) (He, Turel, and Bechara 2018), and Instagram Addiction Scale (Kircaburun and Griffiths 2018). There are also scales related to social media craving in the literature. Wegmann et al. (2015) modified the Internet Addiction Scale (Pawlikowski, Altstötter-Gleich, and Brand 2013) to the Specific Internet Addiction-Social Networking Sites Scale (SIA-SNSS). One of the subscales of SIA-SNSS assesses social media craving. However, the validity and reliability of the SIA-SNSS were only examined using the Cronbach's α internal consistency coefficient. Similarly, Hormes et al. (2014) modified the Penn Alcohol Craving Scale (PACS) (Flannery, Volpicelli, and Pettinati 1999) as the PACS-Facebook Addiction Scale (PACS-FBS). Again, the validity and reliability of the PACS-FBS were only examined using a Cronbach's α internal consistency coefficient and the adapted scale only examined craving for Facebook use rather than social networking sites more generally. Therefore, there is a need for a measurement tool that assesses all social media craving with greater validity and reliability. Turel and Bechara (2016) modified the Alcohol Craving Experience (ACE) questionnaire (Statham et al. 2011) as Facebook Craving Experience (FaCE) questionnaire. They examined the validity and reliability of the FaCE via content validity, predictive validity, and an internal consistency coefficient. Again, this only assessed craving for Facebook use and not social media use more generally. Therefore, more robust scales related to social media craving are needed with greater reliability and validity assessments.
In this context, valid and reliable scales that assess social media craving can contribute to increasing the quality of research into social media craving including cross-cultural research.
In addition, such scales could contribute to studies related to the diagnosis and treatment of disorders related to social media use. In this respect, the Penn Alcohol Craving Scale is a practical scale that has been adapted to other cultures (Chodkiewicz et al. 2018;Evren, Flannery, Çelik, Durkaya, and Dalbudak 2008;Kim et al. 2008;Pérez Gálvez, De Juan-Gutiérrez Maroto, García Fernández, Cabot Ivorra, and De Vicente Manzanaro 2016). The primary aim of the present study was to adapt and validate a Turkish version of the PACS to assess craving among social media users.

Participants
The study comprised on 423 university students (242 females and 181 males) across five different samples. A pilot study analysis was carried out with 45 students (33 females and 12 males). A structural validity study was carried out with 310 students (169 females and 141 males) across three different samples. Structural validity was carried out with Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), and a criterion validity analysis. A test-retest reliability analysis was carried out with 68 university students (40 females and 28 males). Demographic data relating to the study's five sets of analyses are presented in Table 1.

Materials
Social Media Craving Scale In the present study, the PACS developed by Flannery et al. (1999) was adapted to become the Social Media Craving Scale (SMCS). The five-item PACS is a self-report measure that asks participants to rate the intensity, frequency, and duration of their craving, and ability to resist acting on their craving for a stated period of time (in relation to alcohol use). The PACS also assesses the general craving for during the past week. High scores on the scale indicate high levels of alcohol craving. The Cronbach's alpha internal consistency reliability coefficient for PACS was calculated to be .92. The criterion validity of the PACS was assessed with obsessive-compulsive drinking, alcohol urge addiction severity, and adverse consequences of alcohol abuse. The predictive validity of the scale was based on relapse. When validity and reliability analysis of the PACS are considered as a whole, it is concluded that the PACS is a valid and reliable scale that assesses alcohol craving and was adapted to Turkish by Evren et al. (2008) for alcohol-addicted men.
Brief Self-Control Scale The Brief Self-Control Scale (BSCS), developed by Tangney, Baumeister, and Boone (2004) and adapted into Turkish by Nebioglu, Konuk, Akbaba, and Eroglu (2012), comprises nine items and two dimensions (impulsiveness and self-discipline). The BSCS is a 5-point Likert-type scale. As a result of CFA conducted by Nebioglu et al. (2012), the BSCS was found to have perfect fit indices (χ 2 /df = 1.98, CFI = .98, GFI = .99, and RMSEA = .043). Cronbach's α internal consistency reliability coefficients of the BSCS ranged between .81 and .87. High scores indicate a high level of impulsivity and self-discipline (Nebioglu et al. 2012). In the present study, Cronbach's alpha coefficient was .76.

Procedure
The development of the SMCS and data collection was approved by the research team's university Ethics Committee. For the translation of the SMCS, two groups of researchers carried out the translation process. The first group translated the items of the PACS into Turkish. The second group then translated the Turkish version back into English. At this stage, the consistency between two translations was examined. The discrepancies in translations were forwarded to the translation groups leading to a consensus on the translation. Following this, the draft form was revised as the SMCS. In the SMCS, the words "social media using" were used instead of the word "drinking" [(see Appendix 1 (Turkish) and Appendix 2 (English)]. Four researchers conducting research into digital technology abuse examined the adapted form. After confirmation from this group, the trial form of the SMCS was developed. In the final stage, the SMCS was evaluated by 45 university students (33 females and 12 males). Participants did not report any problems using the SMCS. The structural validity of the SMCS was examined with EFA, CFA, and criterion validity. Firstly, the dataset was examined as to whether it was suitable for EFA and it was found that it was. The SMCS was then tested with CFA. Before starting CFA, it was examined whether the data set suitable for CFA (sample size, multiple linearity, multicollinearity, and multiple normality). As a result of the evaluation, it was found that the dataset was suitable for CFA. Therefore, Maximum Likelihood method was used in CFA. In order to assess the model fit, fit indices (as outlined in Table 2) were considered. The criterion validity of the SMCS was assessed with the SMDS, BSCS (self-discipline, impulsiveness), daily social media use duration, social media usage history, frequency of checking social media accounts during the day, number of social media accounts, and number of daily shares on social media. The reliability of the SMCS was analyzed using Cronbach's α internal consistency coefficients, corrected item total correlation coefficients, and test-retest method. SPSS and AMOS programs were used to analyze the data.

Pilot Study
A pilot study was carried out on 45 university students (33 females and 12 males) in order to assess whether students understand the SMCS. Results demonstrated that the students easily understood the instructions, scale items, and response options.

Scale Validity
Exploratory Factor Analysis The structural validity of SMCS was first examined with EFA.
EFA was carried out on 105 university students (59 females and 46 males). Kaiser-Meyer-Olkin (KMO) coefficient and Barlett's Sphericity Test were performed to determine whether or not EFA was applied to these data. As a result of the analysis, it was found that the dataset was suitable for EFA [(Kaiser-Meyer-Olkin (KMO) coefficient = .80, Barlett's Sphericity Test (χ 2 ) = χ 2 = 172.864 p < .001)]. Following this, EFA was performed on five items using basic component analysis. As a result of EFA, the scale was found to be single-factor (eigenvalue = 2.788). This single-factor structure explained 55.752% of the total variance. In order to determine the factor number of SMCS, the line graph in Fig. 1 was examined. This demonstrates that SMCS comprised a single factor. The factor loading values of the SMCS ranged between .38 and .86. The scree plot of the SMCS is presented in Fig. 1.

Confirmatory Factor Analysis
The one-dimensional SMCS structure determined by EFA was then tested with CFA. The CFA was used to test whether a model has been confirmed. CFA was carried out on 106 students (76 females and 30 males). The five-item one-dimensional structure of SMCS was tested with first-level CFA. In the analysis, it was found that the social media craving model had excellent fit index values [(χ 2 = 6.328, df = 5, χ 2 /df = 1.266, RMSEA = .050, GFI = .98, AGFI = .94, CFI = .99, IFI = .99, and TLI (NNFI) = .99]. The factor loadings of SMCS for CFA ranged between .54 and .88. The path diagram of SMCS in the CFA sample is presented in Fig. 2.
The five-item one-dimensional structure of SMCS was also tested on the data collected for criterion validity. As a result of the CFA, the SMCS model was found to be good fit except for RMSEA and TLI ( between .49 and .87. The path diagram in this sample of SMCS is presented in Fig. 3. These findings indicate that SMCS was confirmed in different samples. The CFA results are shown in Table 3.

Criterion Validity
The criterion validity of the SMCS was carried out on a sample of 99 adolescents (80 females and 43 males). The criterion validity of the SMCS was assessed using the SMDS, BSCS (self-discipline, impulsiveness), and self-reported personal information (daily social media use duration, social media usage history, frequency of checking social media accounts during the day, number of social media accounts, and number of daily shares on social media use). It was found that the SMCS was significantly associated with social media addiction (r = .67, p < .01), self-discipline (r = − .29, p < .01), impulsiveness (r = .44, p < .01), daily social media use duration (r = .64, p < .01), social media usage history (r = .39, p < .01), frequency of checking social media accounts during the day (r = − .36, p < .01), number of social media accounts (r = .48, p < .01), and number of daily shares on social media (r = .40, p < .01).

Scale Reliability
The reliability of SMCS was analyzed using Cronbach's α internal consistency coefficients, corrected item total correlation coefficients, and the test-retest method. The reliability analyzes of SMCS were performed in three different samples (EFA, CFA, and criterion validity). Cronbach's α internal consistency coefficients of SMCS were determined to be .79 in the EFA sample, .84 in the CFA sample, and .82 in the criterion validity sample. Correlated item total correlation coefficients of the SMCS were between .26 and .72 in the EFA sample, .49 and .77 in the CFA sample, and .47 to .73 in the criterion validity sample. The consistency of the SMCS against time spent using social media was examined and performed 3 weeks apart. The test-retest reliability coefficient of the SMCS was found to be .83.

Discussion
Using social media can immediately bring together individuals living in different geographical locations. Furthermore, using social media can bring many benefits such as (among other things) knowledge acquisition, communication, fun, gaming, shopping, and doing research. In these aspects, using social media is an important mass communication tool that makes life easier for the majority of individuals. However, when social media is abused, it may start to cause harm for a minority of individuals. Extreme abuse of using social media has been conceptualized by some scholars as being an addiction (Andreassen et al. 2017), a disorder , problematic (Meena et al. 2012), compulsive (De Cock et al. 2014, and/or pathological (Holmgren and Coyne 2017). One of the overlaps between these concepts is the desire and craving to use social media. Consequently, studies examining social media craving are important. The aim of the present study was to develop the Social Media Craving Scale (SMCS) by adapting the Penn Alcohol Craving Scale (PACS). The reliability and validity of the SMCS were examined via robust psychometric testing. Firstly, the factor structure of the SMCS was investigated with EFA. The factor structure determined as a result of EFA was then tested with CFA (in different samples). Finally, the criterion validity of the SMCS was examined. The criterion validity of the SMCS was assessed with SMDS, BSCS (self-discipline, impulsiveness), daily social media use duration, social media usage history, frequency of checking social media accounts during the day, number of social media accounts, and number of daily shares on social media. The reliability of SMCS was analyzed using Cronbach's α internal consistency coefficients, corrected item total correlation coefficients, and the test-retest method.
As a result of EFA, the SMCS was found to be single-factor (i.e., unidimensional). This singlefactor structure explained approximately half of the total variance. The explained variance was sufficient for unidimensional scales (Buyukozturk 2010;Cokluk et al. 2012). The unidimensional structure of SMCS was tested in two different samples with CFA. As a result of CFA, SMCS models were found to have acceptable fit values. The fit indices in Table 2 demonstrate acceptable values. In the EFA and the CFA samples, factor loading values related to items having acceptable values. Factor loading values are accepted as > .30 (Kline 1994) or > .32 (Tabachnick and Fidell 2013). The criterion validity of the SMCS was also examined. The criterion validity of the SMCS was assessed with measures of social media disorder, self-discipline, impulsiveness, daily social media use duration, social media usage history, frequency of checking social media accounts during the day, number of social media accounts, and number of daily shares on social media. Analysis demonstrated that the SMCS was associated with all these variables in the expected direction. In the social sciences, in order to evaluate a scale as reliable, a test-retest coefficient and internal consistency coefficient should be .70 and above (Cokluk et al. 2012). The test-retest reliability coefficient calculated in this study had an acceptable value. The Cronbach's α internal consistency coefficient calculated in three different samples all had acceptable values. Finally, the corrected item total coefficients indicated that SMCS was a reliable scale. The corrected item total Although the SMCS has strong validity and reliability, the present study had some limitations. The validity and reliability analyses of SMCS were performed among a "normal" (i.e., non-clinical) population. Therefore, in future studies, the validity and reliability of the SMCS should be examined in clinical samples of those with problematic social media use. The SMCS is a self-report scale, and the criterion validity of the SMCS was also assessed with selfreport scales. Self-report data may not provide completely objective data and is subject to wellknown biases such as memory recall and social desirability. However, the collection of this type of data is unavoidable in the testing of psychometric instruments. In the present study, an appropriate convenience sampling method was used. However, random sampling method may increase the measurement power of the SMCS. Finally, the SMCS was developed and tested using university students. In future studies, the validity and reliability of the SMCS should be examined on other populations (e.g., non-university adolescents, adult samples, clinical samples). This is likely extend the scope of use of the SMCS.

Compliance with Ethical Standards
Ethics Committee Approval Ethics committee approval was obtained for this study. The authors report that the study was conducted in accordance with the Helsinki Declaration.
Informed Consent The informed consent form was read by the researcher in the classroom environment. Informed consent was obtained from all participants.
Conflict of Interest Peter J. Rogers has received grants to support research on caffeine from GlaxoSmithKline. Csilla Ágoston, Róbert Urbán, Orsolya Király, Mark D. Griffiths, and Zsolt Demetrovics declare that they have no conflict of interest.
Ethical Approval All procedures performed in this study involving human participants were in accordance with the ethical standards of University's Research Ethics Board and with the 1975 Helsinki Declaration.
④ Strong urge, but easily controlled. ⑤ Strong urge and difficult to control. ⑥ Strong urge and uncontrollable. 3. In the past week, how much time have you spent thinking about using social media or about how good using social media would make you feel? None at all. ① Less than 20 min. ② 21-45 min. ③ 46-90 min. ④ 90 min-3 h. ⑤ Between 3 to 6 h. ⑥ More than 6 h. 4. In the past week, how difficult would it have been to resist using social media if you knew you had the opportunity to engage in using social media? Not difficult at all. ① Very mildly difficult. ② Mildly difficult. ③ Moderately difficult. ④ Very difficult. ⑤ Extremely difficult. ⑥ Would not be able to resist. 5. Keeping in mind your responses to the previous questions, please rate your overall average social media craving during the past week. Never thought about social media using and never had the urge to social media using. ① Rarely thought about social media using and rarely had the urge to social media using. ② Occasionally thought about social media using and occasionally had the urge to social media using. ③ Sometimes thought about social media using and sometimes had the urge to social media using. ④ Often thought about social media using and often had the urge to social media using. ⑤ Thought about social media using most of the time and had the urge to social media using most of the time. ⑥ Thought about social media using nearly all of the time and had the urge to social media using nearly all of the time.
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