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)

The purpose of this paper is to provide a formal three-step explication of a question that has been traditionally viewed as fundamental to developmental theory construction and explanation: Is behavioral development continous or discontinuous, or is it both? First, a preliminary structural definition of behavioral development involving a certain…

The escalation of commitment has been variously labeled the psychology of entrapment, the sunk cost effect, and the too-much-invested-to-quit syndrome. This article reviews the state of research and describes four major determinants: project; psychological; social; and organizational variables. A model is provided. (YP)

Explores current theories of emotional development in order to identify the assumptions that could explain the strong antagonism toward early nonbasic emotions. Draws on the contrasting and polarity of viewpoints to examine the logical implications of these viewpoints for the very possibility of early nonbasic emotions and their reciprocal…

A dyadic model shows intelligent behavior as result of invariant processes of (a) organism-environmental reaction, (b) experience acquisition involving internal organism transformation, and (c) development of central processes of control. If interaction is controlled subsequent observed behaviors should clarify classroom role of psychologist.…

Maintains that (1) research questions must address intra- and extraorganism contextual relations and must be multidisciplinary in scope; (2) research must be sensitive to contextual variability and individual differences; and (3) scholars must develop empirically generative models linking the development of human beings with changing contexts. (BC)

Reviews conceptual background on atypical patterns of early attachments, including basic theoretical terms and constructs of attachment theory; the nature and function of the original classification system; notions of "exceptional cases" or "atypical patterns"; and implications of atypicality for both a classification system of attachment behavior…

Considers alternative ways of conceptualizing patterns of attachment, arguing that danger prompts organization of protective strategies in children. Discusses issues of what is normal versus atypical; complex organization versus disorganization; neurological disorders and temperament; assessment of patterns of attachment and analysis of attachment…

This article offers a developmental perspective on college drinking by focusing on broad developmental themes during adolescence and the transition to young adulthood. Links between developmental transitions and alcohol use and other health risks are discussed in light of five conceptual models: Overload; Developmental Mismatch; Increased…

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…