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…

Presents an overview of the topics of planning and control to provide a context for the articles in this issue of the journal. Considers development across the life span, subgroup variations, and correlates. Also explores potential linkages between planning and control. (MM)

This article examines research methodology, dependent measures, and programmatic variables used to analyze the effects of preschool integration of children with disabilities. Analysis provides support for the benefits of preschool integration with respect to social and other behavioral outcomes, though not for developmental outcomes over time.…

Offers an organizational perspective designed to illuminate processes of symbolic development in both normal and abnormal populations. Focuses on the symbolic system of Down Syndrome children. Data support the claim that the symbolic system of these children is intact. (RWB)

A review of research regarding the self-concept, locus of control, temperament, problem behavior, and social status of learning-disabled (LD) adolescents reveals a general lack of information, conflicting results, and methodological pitfalls inherent in the study of LD adolescent personality and behavioral development. (CB)

In all of his published work, Jean Piaget never abandoned his original theoretical framework for the understanding of human development. This framework insists that intelligence is essentially a biological phenomenon; its development is best understood as the development of a sophisticated and highly successful adaptation device. This device…