Related Experiment Video
Updated: Aug 9, 2026

Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers
Published on: March 14, 2018
Deviant peer affiliation and problem behavior: a test of genetic and environmental influences
Bernadette Marie Bullock1, Kirby Deater-Deckard, Leslie D Leve
1Child and Family Center, University of Oregon, Eugene, 97401, USA. bullock@uoregon.edu
Abstract:
This study uses a multitrait, multimethod (MTMM) approach to investigate the genetic and environmental etiologies of childhood deviant peer affiliation (DPA) and problem behavior (PROB). The variability of genetic and environmental estimates by agent and method is also examined. A total of 77 monozygotic and 72 dizygotic twin pairs and each twin's close friend were assessed. The informants included parents, teachers, and twins, and the methods involved questionnaire reports and coder ratings of videotaped dyadic interactions between each twin and their close friend. Twin intraclass correlations and univariate models attributed DPA and PROB to genetic, and shared and nonshared environmental effects. Parameter estimates differed by rater and method, however. Results accentuate the imperative to attend to method effects inherent in MTMM behavioral geneticresearch.
Related Concept Videos
Behavioral Genetics and Its Designs
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
Human Genetics
The complex relationship between genetics and psychology is observable through common biological components such...
Causes of Social Behavior III: Biological and Environmental Influences
Conduct Disorder
Polygenic Traits
Gene-Environment Interactions

