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01-12-2009 | Uitgave 4/2009

Journal of Psychopathology and Behavioral Assessment 4/2009

Common Genetic but Specific Environmental Influences for Aggressive and Deceitful Behaviors in Preadolescent Males

Tijdschrift:
Journal of Psychopathology and Behavioral Assessment > Uitgave 4/2009
Auteurs:
Edward D. Barker, Henrik Larsson, Essi Viding, Barbara Maughan, Fruhling Rijsdijk, Nathalie Fontaine, Robert Plomin

Abstract

Although both aggressive (AGG) and deceitful behaviors (DEC) are symptoms of childhood conduct problems, few studies have examined common vs. specific etiological influences. Early intervention is encouraged for conduct problems and findings from genetically informative studies can suggest whether interventions should focus on conduct problems in general or groupings of conduct problems more specifically. Twin model-fitting analyses were conducted on same and different teacher ratings of AGG and DEC for 872 9-year old male twin pairs. Common genetic influences were found to underlie the susceptibility for both AGG and DEC. The same teacher ratings resulted in somewhat higher heritability estimates than different teacher ratings. Results also indicated stronger environmental effects for DEC as compared with AGG, with a significant shared environmental component for same teachers and a substantial non-shared environmental component for different teachers. Our data suggest that AGG and DEC share risk genes and environmental factors may differentiate these two types of conduct problems. Characterizing these specific environmental factors may be useful when developing interventions.

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