Perspective-Taking and Empathic Concern as Mediators for Happiness and Positive Affect in Adolescents With and Without Asperger Syndrome
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Abstract
The present study explored the mediating role of cognitive and affective components of empathy in the relationship between happiness and positive and negative affect in adolescents with Asperger Syndrome (AS) and their non-AS peers. For that purpose, we measured empathy, subjective happiness, and affect experienced by a group of 42 adolescents with AS compared to 44 of their non-AS peers. Adolescents in both groups were matched on age, sex, and IQ, and were administered a battery of measures assessing their self-reports of empathy, perspective-taking, subjective happiness, and positive and negative affect. Findings revealed that adolescents with AS, in contrast to their peers without AS, reported less subjective happiness, less positive affect, and lower affective balance. No differences were found between the two groups on negative affect. A mediating role of both cognitive and affective components of empathy was found between happiness, positive affect, and affective balance experienced in relation to AS. Theoretical and practical implications of these results are discussed.
Keywords
Asperger syndrome Happiness Affect Mediators EmpathyReferences
- American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders (4th ed., text revision). Washington DC: APA.Google Scholar
- American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Washington DC: APA.Google Scholar
- Argyle, M., & Crossland, J. (1987). The dimensions of positive emotions. British Journal of Social Psychology, 26(2), 127–137. doi: 10.1111/j.2044-8309.1987.tb00773.x.PubMedCrossRefGoogle Scholar
- Atwood, T. (1998). The complete guide to asperger’s syndrome. London: Jessica Kingsley Publishers.Google Scholar
- Baron-Cohen, S. (1995). Mindblindness. an essay on autism and theory of mind. Massachusetts: Massachusetts Institute of Technology.Google Scholar
- Baron-Cohen, S., & Wheelwright, S. (2004). The empathy quotient: an investigation of adults with asperger syndrome or high functioning autism, and normal sex differences. Journal of Autism and Developmental Disorders, 34(2), 163–175.PubMedCrossRefGoogle Scholar
- Baron-Cohen, S., Wheelwright, S., Hill, J., Raste, Y., & Plumb, I. (2001). The “reading the mind in the eyes” test revised version: a study with normal adults, and adults with asperger syndrome or high functioning autism. Journal of Child Psychology and Psychiatry, 42(2), 241–251. doi: 10.1111/1469-7610.00715.PubMedCrossRefGoogle Scholar
- Batson, D., Duncan, B., Ackerman, P., Buckey, T., & Birch, K. (1981). Is empathic emotion a source of altruistic motivation? Journal of Personality and Social Psychology, 40(2), 290–302. doi: 10.1037//0022-3514.40.2.290.CrossRefGoogle Scholar
- Berthoz, S., & Hill, E. (2005). The validity of using self-report measures to assess emotion regulations abilities in adults with autism spectrum disorder. European Psychiatry, 20(3), 291–298. doi: 10.1016/j.eurpsy.2004.06.013.PubMedCrossRefGoogle Scholar
- Berwick, D. M., Murphy, J. M., Goldman, P. A., Ware, J. E., Barsky, A. J., & Weinstein, M. C. (1991). Performance of a five-item mental health screening test. Medical Care, 29, 169–176. doi: 10.1097/00005650-199102000-00008.PubMedCrossRefGoogle Scholar
- Blackmore, S. J., Tavassoli, T., Calò, S., Thomas, R., Catmur, C., Frith, U., & Haggard, P. (2006). Tactile sensitivity in asperger syndrome. Brain and Cognition, 61(1), 5–13. doi: 10.1016/j.bandc.2005.12.013.CrossRefGoogle Scholar
- Blair, R. (2005). Responding to the emotions of others: dissociating forms of empathy through the study of typical and psychiatric populations. Consciousness and Cognition, 14(4), 698–718. doi: 10.1016/j.concog.2005.06.004.PubMedCrossRefGoogle Scholar
- Blair, R. (2008). Fine cuts of empathy and the amygdala: dissociable deficits in psychopathy and autism. The Quarterly Journal of Experimental Psychology, 61(1), 157–170. doi: 10.1016/j.concog.2005.06.004.PubMedCrossRefGoogle Scholar
- Bradburn, N. M. (1969). The structure of psychological well-being. Chicago: Aldine.Google Scholar
- Chaplin, L. N. (2009). Please, may I have a bike? better yet, please, may I have a hug? An examination of children’s and adolescents’ happiness. Journal of Happiness Studies, 10(5), 541–562. doi: 10.1007/s10902-008-9108-3.CrossRefGoogle Scholar
- Cheng, H., & Furnham, A. (2002). Personality, peer relations, and self-confidence as predictors of happiness and loneliness. Journal of Adolescence, 25(3), 327–339. doi: 10.1006/yjado.475.PubMedCrossRefGoogle Scholar
- Cohen, J. (1988). A power primer. Psychological Bulletin, 112(1), 155–159. doi: 10.1037//0033-2909.112.1.155.CrossRefGoogle Scholar
- Crocker, P. (1997). A confirmatory factor analysis of the positive affect negative affect scale (PANAS) with a youth sport sample. Journal of Sport & Exercise Psychology, 19, 91–97.Google Scholar
- Davis, M. J. (1980). A multidimensional approach to individual differences in empathy. JSAS, Catalog of Selected Documents in Psychology, 10, 85–104. doi: 10.1037//0022-3514.44.1.113.Google Scholar
- Davis, M. J. (1983). Measuring individual differences in empathy: evidence for a multidimensional approach. Journal of Personality and Social Psychology, 44(1), 113–126. doi: 10.1037/0022-3514.44.1.113.CrossRefGoogle Scholar
- Dearing, E., & Hamilton, L. C. (2006). Contemporary advances and classic advice for analyzing mediating and moderating variables. Monographs of the Society for Research in Child Development, 71(3), 88–104.Google Scholar
- Decety, J., & Jackson, P. (2004). The functional architecture of human empathy. Behavioral and Cognitive Neuroscience Reviews, 3(2), 71–100. doi: 10.1177/1534582304267187.PubMedCrossRefGoogle Scholar
- Decety, J., & Jackson, P. (2006). A social neuroscience perspective on empathy. Current Directions on Psychological Science, 15(2), 54–58. doi: 10.1111/j.0963-7214.2006.00406.x.CrossRefGoogle Scholar
- Demir, M., Jaafar, J., Bilyk, N., & Raduan, M. (2012). Social skills, friendship and happiness: a crosscultural investigation. The Journal of Social Psychology, 152(3), 379–385. doi: 10.1080/00224545.2011.591451.PubMedCrossRefGoogle Scholar
- Diener, E., & Seligman, M. E. P. (2002). Very happy people. Psychological Science, 13(1), 81–84. doi: 10.1111/1467-9280.00415.PubMedCrossRefGoogle Scholar
- Diener, E., Sandvik, E., & Pavot, W. (2009). Happiness is the frequency, not the intensity of positive affect. In F. Strack, M. Argyle, & N. Schwarz (Eds.), Subjective well-being: an interdisciplinary perspective (pp. 119–139). Oxford: Pergamon Press.Google Scholar
- Durkin, K. (1995). Developmental social psychology: from infancy to old age. Oxford: Blackwell.Google Scholar
- Dziobeck, I., Rogers, K., Fleck, S., Bahnemann, M., Heekeren, H., Wolf, O., & Convit, A. (2008). Dissociation of cognitive and emotional empathy in adults with asperger syndrome using the multifaceted empathy test (MET). Journal of Autism and Developmental Disorders, 38(3), 464–473. doi: 10.1007/s10803-007-0486-x.CrossRefGoogle Scholar
- Ehlers, S., & Gillberg, C. (1993). The epidemiology of asperger’s syndrome. a total population study. Journal of Child Psychology and Psychiatry, 34(8), 1327–1350.PubMedCrossRefGoogle Scholar
- Extremera, N., & Fernández-Berrocal, P. (2013). The Subjective Happiness Scale: Translation and preliminary psychometric evaluation of a Spanish version. Social Indicators Research. doi: 10.1007/s11205-013-0497-2.Google Scholar
- Fitzgerald, M., & Molyneux, G. (2004). Overlap between alexithymia and asperger’s syndrome (letter to the editor). The American Journal of Psychiatry, 161(11), 2134–2135. doi: 10.1176/appi.ajp.161.11.2134.PubMedCrossRefGoogle Scholar
- Gamble, A., & Gärling, T. (2012). The relationship between life satisfaction, happiness and current mood. Journal of Happiness Studies, 13(1), 31–45. doi: 10.1007/s10902-011-9248-8.CrossRefGoogle Scholar
- Geraerts, E., Merckelbach, H., Jelicic, M., & Smeets, E. (2006). Long-term consequences of suppression of intrusive anxious thoughts and repressive coping. Behaviour Research and Therapy, 44(10), 1451–1460. doi: 10.1016/j.brat.2005.11.001.PubMedCrossRefGoogle Scholar
- Ghaziuddin, M. (2010). Brief report: should the DSM V drop asperger syndrome? Journal of Autism and Developmental Disorders, 40, 1146–1148. doi: 10.1007/s10803-010-0969-z.PubMedCrossRefGoogle Scholar
- Ghaziuddin, M., Weidmer-Mikhail, E., & Ghaziuddin, N. (1998). Comorbidity of asperger syndrome: a preliminary report. Journal of Intellectual Disability Research, 42(4), 279–283. doi: 10.1111/j.1365-2788.1998.tb01647.x.PubMedCrossRefGoogle Scholar
- Gillberg, C. L. (1992). The emanuel miller memorial lecture 1991. autism and autistic-like conditions: subclasses among disorders of empathy. Journal of Child Psychology and Psychiatry, and Allied Disciplines, 33(5), 813–842. doi: 10.1111/j.1469-7610.1992.tb01959. x.PubMedCrossRefGoogle Scholar
- Gillbert, K. (2012). The neglect role of positive affect in adolescent psychopathology. Psyhological Bulletin, 32(6), 467–481. doi: 10.1016/j.cpr.2012.05.005.Google Scholar
- Golan, O., Baron-Cohen, S., & Golan, Y. (2008). The ’reading the mind in the films’ task (child version): complex emotion and mental state recognition in children with and without autism spectrum conditions. Journal of Autism and Developmental Disorders, 38(8), 1534–1541. doi: 10.1007/s10803-007-0533-7.PubMedCrossRefGoogle Scholar
- Graça, J., Calheiros, M. M., & Barata, M. C. (2013). Authority in the classroom: adolescent autonomy, autonomy support, and teachers’ legitimacy. European Journal of Psychology of Education, 28(3), 1065–1076. doi: 10.1007/s10212-012-0154-1.CrossRefGoogle Scholar
- Hall, G., Doyle, K., Goldberg, J., West, D., & Szatmari, P. (2010). Amygdala engagement in response to subthreshold presentations of anxious face stimuli in adults with autism spectrum disorders: preliminary insights. PLoS One, 5(5), e10804. doi: 10.1371/journal.pone.0010804.PubMedPubMedCentralCrossRefGoogle Scholar
- Happé, F. (2005). Autism, an introduction to psychological theory. London: Taylor & Francis e-Library.Google Scholar
- Hedley, D., & Young, R. (2006). Social comparison processes and depressive symptoms in children and adolescents with asperger syndrome. Autism, 10(2), 139–153. doi: 10.1177/1362361306062020.PubMedCrossRefGoogle Scholar
- Hill, E., Berthoz, S., & Frith, U. (2004). Brief report: cognitive processing of own emotions in individuals with autistic spectrum disorder and in their relatives. Journal of Autism and Developmental Disorders, 34(2), 229–235. doi: 10.1023/B:JADD.0000022613.41399.14.PubMedCrossRefGoogle Scholar
- Hills, P., & Argyle, M. (2001). Happiness, introversion-extraversion and happy introverts. Personality and Individual Differences, 30(4), 595–608. doi: 10.1016/S0191-8869(00)00058-1.CrossRefGoogle Scholar
- Holliday, L. (Ed.). (2004). Asperger syndrome in adolescence: living with the ups, the downs and things in between. London: Jessica Kingsley Publishers.Google Scholar
- Howlin, R. (2004). Asperger syndrome in the adolescent years. In L. Holliday (Ed.), Asperger syndrome in adolescence: living with the ups, the downs and things in between (pp. 13–37). London: Jessica Kingsley Publishers.Google Scholar
- Jones, A., Happé, F., Gilbert, F., Burnett, S., & Viding, E. (2010). Feeling, caring, knowing: different types of empathy deficit in boys with psychopathic tendencies and autism spectrum disorder. Journal of Child Psychology and Psychiatry, 51(11), 1188–1197. doi: 10.1111/j.1469-7610.2010.02280.x.PubMedPubMedCentralCrossRefGoogle Scholar
- Kim, J., Szatmary, P., Bretson, S., Streiner, D., & Wilson, F. (2000). Prevalence of anxiety and mood disorders among children with autism and asperger syndrome. Autism, 4(2), 117–132. doi: 10.1177/1362361300004002002.CrossRefGoogle Scholar
- Kuusikko, S., Pollock-Wurman, R., Jussila, K., Carter, A. S., Mattila, M. L., Ebeling, H., Pauls, D., & Moilanen, I. (2008). Social anxiety in high functioning children and adolescents with autism and asperger syndrome. Journal of Autism and Developmental Disorders, 38(9), 1697–1709. doi: 10.1007/s10803-008-0555-9.PubMedCrossRefGoogle Scholar
- Kuusikko, S., Haapsamo, H., Jansson-Verkasalo, E., Hurting, T., Mattila, M., Ebeling, H., Jussila, K., & Moilanen, I. (2009). Emotion recognition in children and adolescents with autism spectrum disorders. Journal of Autism and Developmental Disorders, 39(6), 938–945. doi: 10.1007/s10803-009-0700-0.PubMedCrossRefGoogle Scholar
- Lam, Y., & Yeung, S. (2012). Cognitive deficits and symbolic play in preschoolers with autism. Research in Autism Spectrum Disorders, 6(1), 560–564. doi: 10.1016/j.rasd.2011.07.017.CrossRefGoogle Scholar
- Laurent, J., Joiner, T. E., Jr., & Catanzaro, S. J. (2011). Positive affect, negative affect, and physiological hyperarousal among referred and nonreferred youths. Psychological Assessment, 23(4), 945–957. doi: 10.1037/a0024080.PubMedCrossRefGoogle Scholar
- Law Smith, M., Montagne, B., Perrett, D., Gill, M., & Gallagher, L. (2010). Detecting subtle facial emotion recognition deficits in high-functioning autism using dynamic stimuli of varying intensities. Neuropsychologia, 48(9), 2777–2781. doi: 10.1016/j.neuropsychologia.2010.03.008.PubMedCrossRefGoogle Scholar
- Layous, K., Nelson, K., Oberle, E., Schonert-Reichl, K., & Lyubormirsky, S. (2012). Kindness counts: prompting prosocial behavior in preadolescents boosts peer acceptance and well-being. PLoS One, 7(12), e351380. doi: 10.1371/journal.pone.0051380.CrossRefGoogle Scholar
- Lyubomirsky, S. (2001). Why are some people happier than others? the role of cognitive and motivational processes in well-being. American Psychologist, 56(3), 239–249. doi: 10.1037//0003-066X/01/S5.00.PubMedCrossRefGoogle Scholar
- Lyubomirsky, S., & Lepper, H. (1997). A measure of subjective happiness: preliminary reliability and construct validation. Social Indicators Research, 46(2), 137–155.CrossRefGoogle Scholar
- Lyubomirsky, S., King, L., & Diener, E. (2005). The benefits of frequent positive affect. Does happiness leads to success? Psychological Bulletin, 131(6), 803–855. doi: 10.1037/0033-2909.131.6.803.Google Scholar
- Lyubomirsky, S., Boehm, J., Kasri, F., & Zehm, K. (2011). The cognitive and hedonic costs of dwelling on achievement-related negative experiences: implications for enduring happiness and unhappiness. Emotion, 11(5), 1152–1167. doi: 10.1037/a0025479.PubMedCrossRefGoogle Scholar
- Natvig, G., Albrektsen, U., & Qvarnstrom, U. (2003). Associations between psychosocial factors and happiness among school adolescents. International Journal of Nursing Practice, 9(3), 166–175. doi: 10.1046/j.1440-172X.2003.00419.x.PubMedCrossRefGoogle Scholar
- Nilsen, W., Karevold, E., Røysamb, E., Gustavson, K., & Mathiesen, K. (2013). Social skills and depressive symptoms across adolescence: social support as mediator in girls versus boys. Journal of Adolescence, 36(1), 11–20. doi: 10.1016/j.adolescence.2012.08.005.PubMedCrossRefGoogle Scholar
- Oberle, E., Schonert-Reichl, K., & Thomson, K. (2010). Understanding the link between social and emotional well-being and peer relations in early adolescence: gender-specific predictors of peer acceptance. Journal of Youth and Adolescence, 39(11), 1330–1342. doi: 10.1007/s10964-009-9486-9.PubMedCrossRefGoogle Scholar
- Pérez-Albéniz, A., de Paúl, J., Etxebarría, J., Paz-Montes, M., & Torres, E. (2003). Adaptación española del Interpersonal reactivity Index (IRI) al español. Psicothema, 15(2), 267–272.Google Scholar
- Preacher, K. J., & Hayes, A. F. (2008). Asymptotic and resampling strategies for assessing and comparing indirect effects in multiple mediator models. Behavior Research Methods, 40(3), 879–891. doi: 10.3758/BRM.40.3.879.PubMedCrossRefGoogle Scholar
- Reiniers, R., Corcoran, R., Drake, R., Shryane, N., & Völlm, B. (2011). The QCAE: a questionnaire of cognitive and affective empathy. Journal of Personality Assessment, 93(1), 84–95. doi: 10.1080/00223891.2010.528484.CrossRefGoogle Scholar
- Rieske, R. D., Matson, J. L., May, A. C., & Kozlowski, A. M. (2012). Anxiety in children with high-functioning autism spectrum disorders: significant differences and the moderating effects of social impairments. Journal of Developmental and Physical Disabilities, 24(2), 167–180. doi: 10.1007/s10882-011-9264-y.CrossRefGoogle Scholar
- Rogers, K., Dziobeck, I., Hassenstab, J., Wolf, O., & Convit, A. (2007). Who cares? revisiting empathy in asperger syndrome. Journal of Autism and Developmental Disorders, 37(4), 709–715. doi: 10.1007/s10803-006-0197-8.PubMedCrossRefGoogle Scholar
- Rutherford, M. D., & McIntosh, D. (2007). Rules versus protoype matching: strategies of perception of emotional facial expressions in the autism spectrum. Journal of Autism and Developmental Disorders, 37(2), 187–196. doi: 10.1007/s10803-006-0151-9.PubMedCrossRefGoogle Scholar
- Samson, A., Hubert, O., & Gross, J. (2012). Emotion regulation in asperger’s syndrome and high functioning autism. Emotion, 12(4), 659–665. doi: 10.1037/a0027975.PubMedCrossRefGoogle Scholar
- Sandín, B., Chorot, P., Lostao, L., Joiner, T. E., Santed, M. A., & Valiente, R. M. (1999). Escalas PANAS de afecto positivo y negativo: validación factorial y convergencia transcultural. Psicothema, 11(1), 37–51.Google Scholar
- Sanjuán, P. (2011). Affect balance as mediating variable between effective psychological functioning and satisfaction with life. Journal of Happiness Studies, 12(3), 373–384. doi: 10.1007/s10902-010-91995.CrossRefGoogle Scholar
- Schonert-Reichl, K., Zaidman-Zait, A., Smith, V., & Hertzman, C. (2012). Promoting children’s prosocial behaviors in school: impact of the “roots of empathy” program on the social and emotional competence of school-aged children. School Mental Health, 4(1), 1–21. doi: 10.1007/s12310-011-9064-7.CrossRefGoogle Scholar
- Schwartz, C., Bell, J., Ma, Y., & Reed, G. (2003). Altruistic social interest behaviors are associated with better mental health. Psychosomatic Medicine, 65(5), 778–785. doi: 10.1097/01.PSY.0000079378.39062.D4.PubMedCrossRefGoogle Scholar
- Seligman, M., & Csikszentmihalyi, M. (2001). Positive psychology: an introduction. American Psychologist, 55(1), 5–14. doi: 10.1037//0003-066X.55.1.5.CrossRefGoogle Scholar
- Shamay-Tsoory, S. (2008). Recognition of ‘fortune of others’ emotions in asperger syndrome and high functioning autism. Journal of Autism and Developmental Disorders, 38(8), 1451–1461. doi: 10.1007/s10803-007-0515-9.PubMedCrossRefGoogle Scholar
- Shanafelt, T., West, C., Zhao, X., Novotny, P., Kolars, J., Habermann, T., & Sloan, J. (2005). Relationship between increased personal well-being and enhanced empathy among internal medicine residents. Journal of General Internal Medicine, 20(7), 559–564. doi: 10.1111/j.1525-1497.2005.0108.x.PubMedPubMedCentralCrossRefGoogle Scholar
- Sifnéos, P. E. (1973). The prevalence of alexithymic characteristics in psychosomatic patients. Psychotherapy and Psychosomatics, 22(2–6), 255–262. doi: 10.1159/000286529.PubMedCrossRefGoogle Scholar
- Silvers, J. A., McCrae, K., Gabrieli, J. D. E., Gross, J. J., Remy, K. A., & Ochsner, K. N. (2012). Age-related differences in emotional reactivity, regulation, and rejection sensitivity in adolescence. Emotion, 12(6), 1235–1247. doi: 10.1037/a0028297.PubMedPubMedCentralCrossRefGoogle Scholar
- Smith, A. (2006). Cognitive empathy and emotional empathy in human behavior and evolution. The Psychological Record, 56(1), 3–21.Google Scholar
- Smith, A. (2009a). The empathy imbalance hypothesis of autism: a theoretical approach to cognitive and emotional empathy in autistic development. The Psychological Record, 59(2), 489–510.Google Scholar
- Smith, A. (2009b). Emotional empathy in autism spectrum conditions: weak, intact or heightened? Journal of Autism and Developmental Disorders, 39(12), 1747–1748. doi: 10.1007/s10803-009-0799-z.PubMedCrossRefGoogle Scholar
- Sofronoff, K., Eloff, J., Sheffield, J., & Atwood, T. (2011). Increasing the understanding and demonstration of appropriate affection in children with asperger syndrome: a pilot trial. Autism Research and Treatment, 2011, 1–8. doi: 10.1155/2011/214317.CrossRefGoogle Scholar
- Stanton, M. (2004). How do I be me? In L. Holliday (Ed.), Asperger syndrome in adolescence: living with the ups, the downs and things in between (pp. 312–323). London: Jessica Kingsley Publishers.Google Scholar
- Storch, E. A., Larson, M. J., Ehrenreich-May, J., Arnold, E. B., Jones, A. M., Renno, P., Fujii, C., & Wood, J. J. (2012). Peer victimization in youth with autism spectrum disorders and co-occurring anxiety: relations with psychopathology and loneliness. Journal of Developmetal and Physical Disabilities, 24(6), 575–590. doi: 10.1007/s10882-012-9290-4.CrossRefGoogle Scholar
- Thompson, L., & Thompson, M. (2007). Neuro-feedback for stress management. In P. Lerner, R. Woolfolk, & W. Sime (Eds.), Principles and practice of stress management (3rd ed., pp. 249–287). New York: Guilford.Google Scholar
- Tkach, C., & Lyubormirsky, S. (2006). How do people pursue happiness?: relating personality, happiness-increasing strategies and well-being. Journal of Happiness Studies, 7(2), 183–225. doi: 10.1007/s10902-005-4754-1.CrossRefGoogle Scholar
- Tureck, K., & Matson, J. L. (2012). An examination of the relationship between autism spectrum disorder, intellectual functioning, and social skills in children. Journal of Developmental and Physical Disabilities, 24(6), 607–615. doi: 10.1007/s10882-012-9292-2.CrossRefGoogle Scholar
- Uekermann, J., Channon, S., Winkel, K., Schlebusch, P., & Daum, I. (2007). Theory of mind, humor processing and executive functioning in alcoholism. Addiction, 102(2), 232–240. doi: 10.1111/j.1360-0443.2006.01656.x.PubMedCrossRefGoogle Scholar
- Watson, D., Clark, A. L., & Tellegen, A. (1988). Development and validation of brief measures of positive and negative affect: the PANAS scales. Journal of Personality and Social Psychology, 54(6), 1063–1070.PubMedCrossRefGoogle Scholar
- Whitehouse, J. O., Durkin, K., Jaquet, E., & Ziatas, K. (2009). Friendship, loneliness and depression in adolescents with asperger’s syndrome. Journal of Adolescence, 32(2), 309–322. doi: 10.1016/j.adolescence.2008.03.004.PubMedCrossRefGoogle Scholar
- Wu, A., & Zumbo, B. (2007). Understanding and using mediators and moderators. Social Indicators Research, 87(3), 367–392. doi: 10.1007/s11205-007-9143-1.CrossRefGoogle Scholar