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Related Experiment Video

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Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers

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Delinquent peer affiliation and conduct problems: A twin study.

Tanya M M Button¹, Robin P Corley, Soo Hyun Rhee

¹Institute for Behavioral Genetics, University of Colorado, Boulder, CO 80309, USA. tanya.button@colorado.edu

Journal of Abnormal Psychology

|August 19, 2007

Summary

Genetic factors influence delinquent peer affiliation and conduct problems. Shared genes contribute to the link between peer groups and behavior, especially at higher levels of peer affiliation.

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Area of Science:

Behavioral genetics
Developmental psychology
Psychopathology

Background:

Environmental risks often correlate with individual genotypes.
Delinquent peer affiliation may be linked to conduct problems via shared genetic liability.

Purpose of the Study:

Investigate genetic contributions to delinquent peer affiliation.
Examine genetic influence on the correlation between peer affiliation and conduct problems.
Assess genotype-environment correlation in adolescent behavior.

Main Methods:

Twin study design utilizing 553 monozygotic and 558 dizygotic twin pairs.
Assessment of delinquent peer affiliation and conduct problems in twins aged 11–18 years.
Quantitative genetic modeling to partition variance components.

Main Results:

Delinquent peer affiliation is influenced by genetic, shared environmental, and nonshared environmental factors.
Genetic factors significantly contribute to the correlation between delinquent peer affiliation and conduct problems, indicating genotype-environment correlation.
The genetic influence on conduct problems is context-dependent, increasing with higher levels of delinquent peer affiliation.

Conclusions:

Genetic factors play a role in both delinquent peer affiliation and its association with conduct problems.
Evidence supports genotype-environment correlation, where genetic predispositions influence exposure to environmental risk factors.
The interplay between genetics and environment is crucial for understanding conduct problems, with peer affiliation acting as a significant moderator.