The Child Psychology Series: The Study of Behavioral Development concerns the formulation of general laws of development, transcending the realm of the development of the individual from infancy to maturity. This book provides a systematic treatment of problems of research design, strategy, and data analysis that relate specifically to the study of developmental changes in behavior. The topics discussed include developmental psychology in the 1970s, age variable in psychological research, and programmatic view of the task of developmental psychology. The problems of measurement and quantification in developmental psychology, correlational methods in the study of developmental change, and experimental manipulation of developmental change are also elaborated. This publication is recommended for psychologists, specialists, and students learning the nature of behavioral change.