Depression from Childhood into Late Adolescence: Influence of Gender, Development, Genetic Susceptibility, and Peer Stress.

Publication Date

11-2015

Document Type

Article

Organizational Units

College of Arts Humanities and Social Sciences, Psychology

Keywords

Depression trajectories, Genetics, Peer stress, Development, Gender

Abstract

Depression is a debilitating mental illness with clear developmental patterns from childhood through late adolescence. Here, we present data from the Gene Environment Mood (GEM) study, which used an accelerated longitudinal cohort design with youth (N 665) starting in 3rd, 6th, and 9th grades, and a caretaker, who were recruited from the general community, and were then assessed repeatedly through semistructured diagnostic interviews every 6 months over 3 years (7 waves of data) to establish and then predict trajectories of depression from age 8 to 18. First, we demonstrated that overall prevalence rates of depression over time, by age, gender, and pubertal status, in the GEM study closely match those trajectories previously obtained in past developmental epidemiological research. Second, we tested whether a genetic vulnerability-stress model involving 5-HTTLPR and chronic peer stress was moderated by developmental factors. Results showed that older aged adolescents with SS/SL genotype, who experienced higher peer chronic stress over 3 years, were the most likely to be diagnosed with a depressive episode over time. Girls experiencing greater peer chronic stress were the most likely to develop depression. This study used repeated assessments of diagnostic interviewing in a moderately large sample of youth over 3 years to show that depression rates increase in middle to late adolescence, or postpubertally, and that the gender difference in depression emerges earlier in adolescence (age 12.5), or postpubertally. Additionally, genetically susceptible older adolescents who experience chronic peer stress were the most likely to become depressed over time.

Copyright Date

11-1-2015

Copyright Statement / License for Reuse

All Rights Reserved
All Rights Reserved.

Rights Holder

American Psychological Association

Provenance

Received from author

Language

English (eng)

Extent

14 pgs

Publication Statement

Copyright held by the American Psychological Association. User is responsible for all copyright compliance.

Publication Title

Journal of Abnormal Psychology

Volume

124

Issue

4

First Page

803

Last Page

816

ISSN

2769-755X

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