Gilbert Gottlieb's theory of probabilistic epigenesis replaced the nature-nurture dichotomy, and similar oppositions, with an integrated account of the development of the entire behavioral phenotype. In that theory, invariant developmental outcomes cannot be identified with an organism's 'nature,' if by that term is meant a set of predetermined…

The articles in this special Practitioner's Edition of "Psychology in the Schools" share the application of sound educational and behavioral practices in real school and classroom contexts. Given this emphasis in these articles on the applied use of behavioral practices, the purpose of this brief commentary is to highlight and comment on some of…

Considers the potential value of two bodies of thought arising from work on animals in connection with rehabilitating abnormal behavior. One deals with the processes of catch-up and self-regulation, the other with optional periods of learning in development. (MP)

In order to understand the complex behavior of an individual, what that individual has learned must be understood. Unfortunately, behavior analysis and psychology in general have not studied the cumulative effects of the learning principles. However, there are concepts in behavior analysis that, although not well researched, address this area.…

The hypothesis of less direct interaction between hemispheres in young children was supported by a behavioral test. Fabric samples were compared with either the same hand (same hemisphere) or with opposite hands (between spheres). (Author/HM)

This review of 50 social validation research studies involving persons with handicaps concludes that social validation procedures are an appropriate and important component of applied behavior analysis. Discussed are methodological issues, social importance of effects, social significance of goals, social appropriateness of procedures, and…

We tested the effect of a Rotated Protocol Immersion package on the emergence of observing responses as prerequisites for more complex verbal developmental capabilities. Three elementary aged students between the ages of 6 and 7 participated. They were diagnosed with autism spectrum disabilities. The treatment condition consisted of total…

Argues that the world view of contemporary behavior analysis, especially behavior analysis of child development, is contextualistic, not mechanistic. The history of behavior analysis is presented in a revised account that focuses on philosophic movements. Contextualism of behavior analysis is contrasted with mechanism with respect to five core…

Describes factor analysis of preschool children's play behavior, as measured by the Smilansky-Parten play matrix. Varimax rotation solution suggests three factors: Dramatic-Constructive Play, Solitary Behavior, and Functional-Constructive Play. Study suggests that these factors represent constructs of preschoolers' play. (Author/RWB)

Discusses the history of the hierarchical epigenetic systems view as applied to human development and offers examples of its implementation. Notes the agreement by many authors that the multilevel systems view is the right model for developmental psychology in both human and animal studies. (BC)

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)

Examines the capability and motivation of 18- and 24-month-old infants to share, help, comfort, and cooperate with their older siblings; the frequency of such prosocial behavior by both siblings; and the children's response to sibling distress. The relationship between prosocial and conflict behavior was also studied. (HOD)

The predominant theoretical orientation of the majority of scientists studying human behavioral development and family functioning is derived from systems models. These theories are dynamic in their conceptualization and emphasize process and context. To a large extent, the analytic strategies we employ are not consistent with our theoretical…

Analyzes relationships between directly observed infant and mother behavior and infant temperament characteristics, as described in maternal ratings; separates the effects of different variance components in prediction of the observed behaviors; and explores possible interactions between infant sex and infant temperament in determining both infant…

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)