Is depression contagious? A test of alternative peer socialization mechanisms of depressive symptoms in adolescent peer networks.

PURPOSE This study examined the role of two different types of peer socialization (convergence, contagion) in adolescents' depression, adjusting for the effects of peer selection and deselection. METHODS The sample used in this study comprised 949 Finnish adolescents (56% females; mean age: 16 years at the outset) attending classrooms in eight secondary schools. Participants identified three school peers and reported depressive symptoms twice, 1 year apart. Sociometric and behavioral data were analyzed using dynamic social network analysis. RESULTS Adolescents initiated relationships with peers who reported similar levels of depression before initiation of the relationship, and dissolved relationships with peers who became dissimilar in depression from time 1 (T1) to time 2 (T2). The average score of peers' depressive symptoms at T1 predicted changes in adolescent depression at T2 (convergence), but adolescents with peers who reported relatively higher initial levels of depression did not report an increase in depression (contagion). CONCLUSIONS Over time, adolescents' depressive symptoms increasingly converged toward the average levels of their peers, but this convergence was not primarily because of contagion effects. The findings suggest that socialization processes can lead to both increases and decreases in adolescent depression, depending on peers' average level of depression.

[1]  Karl E. Bauman,et al.  Adolescent Social Networks , 1996 .

[2]  G. Lewis,et al.  Screening for depression in primary care. , 2005, The British journal of general practice : the journal of the Royal College of General Practitioners.

[3]  S. Branje,et al.  It takes three: selection, influence, and de-selection processes of depression in adolescent friendship networks. , 2010, Developmental psychology.

[4]  R. Salokangas,et al.  Screening for depression in primary care Development and validation of the Depression Scale, a screening instrument for depression , 1995, Acta psychiatrica Scandinavica.

[5]  Mitchell J Prinstein,et al.  Moderators of Peer Contagion: A Longitudinal Examination of Depression Socialization Between Adolescents and Their Best Friends , 2007, Journal of clinical child and adolescent psychology : the official journal for the Society of Clinical Child and Adolescent Psychology, American Psychological Association, Division 53.

[6]  J. Coyne Depression and the response of others. , 1976, Journal of abnormal psychology.

[7]  M. Marttunen,et al.  Risk for depression: a 6-year follow-up of Finnish adolescents. , 2003, Journal of affective disorders.

[8]  Laurence Steinberg,et al.  Homophily of internalized distress in adolescent peer groups , 1995 .

[9]  M. Prinstein,et al.  Beyond Homophily: A Decade of Advances in Understanding Peer Influence Processes. , 2011, Journal of research on adolescence : the official journal of the Society for Research on Adolescence.

[10]  Thomas E. Joiner,et al.  Contagion of Depressive Symptoms and Mood: Meta-analytic Review and Explanations From Cognitive, Behavioral, and Interpersonal Viewpoints , 2006 .

[11]  Tom A. B. Snijders,et al.  Introduction to stochastic actor-based models for network dynamics , 2010, Soc. Networks.

[12]  T. Oxman,et al.  Prevalence of depression and its correlates in a general medical practice. , 1987, Journal of affective disorders.

[13]  Katariina Salmela-Aro,et al.  Pressure to drink but not to smoke: disentangling selection and socialization in adolescent peer networks and peer groups. , 2010, Journal of adolescence.

[14]  J. Coyne,et al.  Willingness to provide feedback to depressed persons , 1979 .

[15]  P. Lewinsohn,et al.  A behavioral approach to depression. , 1974 .

[16]  M. Katz,et al.  The Psychology of depression : contemporary theory and research , 1974 .

[17]  R. Engels,et al.  Similarity in depressive symptoms in adolescents' friendship dyads: selection or socialization? , 2011, Developmental psychology.

[18]  W. Hartup,et al.  Similarities between Friends and Nonfriends in Middle Childhood , 1998 .

[19]  W. Bukowski,et al.  The role of friendship in child and adolescent psychosocial development. , 2009 .

[20]  Amanda J. Rose Co-rumination in the friendships of girls and boys. , 2002, Child development.

[21]  Amanda J. Rose,et al.  Prospective associations of co-rumination with friendship and emotional adjustment: considering the socioemotional trade-offs of co-rumination. , 2007, Developmental psychology.

[22]  J. Coyne,et al.  Toward an interactional description of depression. , 1976, Psychiatry.

[23]  W. Bukowski,et al.  The snowball effect: Friendship moderates escalations in depressed affect among avoidant and excluded children , 2010, Development and Psychopathology.

[24]  L. Covi,et al.  The Hopkins Symptom Checklist (HSCL)--factors derived from the HSCL-90. , 1979, Journal of affective disorders.

[25]  L. Steinberg,et al.  Age differences in resistance to peer influence. , 2007, Developmental psychology.

[26]  A. Koivisto,et al.  Depression and school performance in middle adolescent boys and girls. , 2008, Journal of adolescence.

[27]  E. Stevens,et al.  Peer Contagion of Depressogenic Attributional Styles Among Adolescents: A Longitudinal Study , 2005, Journal of abnormal child psychology.

[28]  Tom A. B. Snijders,et al.  Manual for SIENA version 2.1 , 2005 .

[29]  A. Koivisto,et al.  The Depression Scale (DEPS) as a case finder for depression in various subgroups of primary care patients , 2008, European Psychiatry.

[30]  Charissa S. L. Cheah,et al.  Peer Victimization, Cue Interpretation, and Internalizing Symptoms: Preliminary Concurrent and Longitudinal Findings for Children and Adolescents , 2005, Journal of clinical child and adolescent psychology : the official journal for the Society of Clinical Child and Adolescent Psychology, American Psychological Association, Division 53.

[31]  L. Radloff The CES-D Scale , 1977 .

[32]  B. Laursen,et al.  Friend influence over adolescent problem behaviors as a function of relative peer acceptance: to be liked is to be emulated. , 2012, Journal of abnormal psychology.

[33]  Kenneth H. Rubin,et al.  Handbook of Peer Interactions, Relationships, and Groups , 2011 .

[34]  C. Steglich,et al.  DYNAMIC NETWORKS AND BEHAVIOR: SEPARATING SELECTION FROM INFLUENCE: separating selection from influence , 2010 .

[35]  A. Koivisto,et al.  The Depression Scale as a screening instrument for a subsequent depressive episode in primary healthcare patients. , 2007, The British journal of psychiatry : the journal of mental science.

[36]  T. Snijders,et al.  A multilevel network study of the effects of delinquent behavior on friendship evolution , 2003 .