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Bullock, Bernadette Marie; Deater-Deckard, Kirby; Leve, Leslie D. – Journal of Abnormal Child Psychology, 2006
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…
Descriptors: Behavior Problems, Genetics, Environmental Influences, Multitrait Multimethod Techniques