ABSTRACT
Child and adolescent psychiatry came late to epide miological research, and in one respect this is fortunate because a tremendous amount of empirical, theoretical, and statistical work has been done in other branches of medicine and psychology, from which we have been able to benefit. In the past 30 years, and outstandingly in the past decade, research in our area has caught up, and even, as in the innovative use of longitudinal epi demiological samples to study gene-environment inter actions (Caspi et al., 2002, 2003; Foley et al., 2004), moved to the forefront of epidemiological research.
