Small group research presently suffers from five major weaknesses: lack of a common conceptual base, lack of appropriate design, lack of external validity, lack of adequate instrumentation, and lack of appropriate statistical procedure. Application of Cattell's three panel model (involving syntality, characteristics of internal structure, and…

This monograph examines the component parts of behavior modification, initially defining the problem behavior and drawing a difference between specific observable behaviors (the focus of behavior modification), and the interest of Freudian and similar psychologies in unobservable internal processes. Instrumental learning related to shaping in…

This manual is intended to improve both the design of longitudinal studies and analysis of the resulting data. Issues related to educational and developmental research have been emphasized in these eight chapters. Topics of particular interest to longitudinal researchers include stochastic models of developmental change, mathematical…