Describes the methodological and statistical criteria neccessary for adequate measurement of organism-environment correlations and presents a path anaysis model as an approach to the study of these correlations. (BD)

The pattern of parent-child correlations in adoption studies has long been interpreted to suggest substantial additive genetic variance underlying variance in IQ. The studies have frequently been criticized on methodological grounds, but those criticisms have not reflected recent perspectives in genetics and developmental theory. Here we apply…