BIOSOCIAL MODELS OF DEVIANT-BEHAVIOR

This article describes biological influences on criminality. It presen ts illustrative data suggesting a biological sex difference in crimina lity and heritable differences in this trait among individuals. Next, methods of isolating environmental influences are described, including shared environmental effects, gene x environment interactions, and no nshared environmental effects. Using research designs that include jus t one level of genetic relatedness (e.g., full siblings) is scientific ally a poor choice. Using environment-friendly behavior genetic resear ch designs is both proper and would offer many avenues for environment al analysis.