It is through the selection of responses that are to serve as the organism's guests that many of the organism's characteristics and outcomes are determined. (MS)

Discusses the work of S. H. White, W. F. Overton and D. M. Baer. (MS)

The philosophies underlying the learning and structural theories used in psychology are described in this article. It is argued that a dialectical view provides some ways to breach the chasm between learning theory and the study of human development. (Author/DB)

Argues that a better understanding of developmental processes is provided by three types of operant research -- laboratory behavioral descriptions, descriptions of naturalistic behavior-environment interdependencies, and predictive naturalistic studies. The usefulness of these processes are examined in light of the goals of life span developmental…

Proposes an operant framework for the analysis of environment-intelligence interactions in old age and calls for an implementation of research aimed at examining the range of modifiability of intellectual proficiency in the elderly. Intellectual decrement is interpreted to reflect the lack of supportive environmental contingencies. (Author/SDH)

Criticizes the operant approach to the study of life span development from a theoretical behaviorism view. It is argued that the operant approach is too limited in its scope to enhance significantly the conceptualization and understanding of life span development. (Author/DB)