Molenaar's (2015) article concerns Developmental Systems Theory (DST) in relation to behavior genetics and he presents implications of DST for empirical research, especially the need for subject-specific studies. In this commentary, the article is discussed from a broader developmental science perspective, particularly regarded through the lens of…

This issue's special section on canalization of behavioral development is introduced. In the special section, an invited paper by Gilbert Gottlieb, adopts a systems approach that stresses the complex interaction of genes, behavior, and environment. Several comments on the Gottlieb paper are also included. (BC)

Presented is the final report of a project concerned with understanding adaptive behavior and functioning in preschool children with particular individual characteristics which may become handicapping conditions. A socio-ecological model of the development of adaptive functioning is presented which focuses on the structure of the conditions in…