RISK MECHANISMS IN DEVELOPMENT - SOME CONCEPTUAL AND METHODOLOGICAL CONSIDERATIONS

This commentary focuses on several issues concerning research on risk mechanisms that are raised in this special issue. First, we focus on w hat marks this special issue as distinctive in the ways in which risk research is conducted. Second, several general issues in research are highlighted, including sample characteristics, measurement strategies, specificity of risk factors and risk mechanisms, categorical vs. dime nsional approaches to samples and measures, and definitions of develop ment and transitions. Third, the challenges for integrating alternativ e models of risk are discussed, with special references to research on genetic and environmental influences on developmental psychopathology .