This volume consists of eleven chapters divided into three sections. The first section consists of a single chapter written by William F. Prokasy, whose contribution provides a description of the academic work and research of David A. Grant, to whom this book is dedicated. Section two contains six chapters and is entitled Conditioning and Cognition. The contributions contained in this section most clearly reflect the interests of Grant: classical conditioning, learning, concept formation, and cognition. In most instances the authors provide detailed reports of research unreported elsewhere. Theoretical interpretations are provided as required. The third section, Methodology, has four chapters and provides fewer detailed reports of individual research. It is also a section covering a broad spectrum of methods, from the 'Measurement of Importance in Multiattribute Models' to a brief description of some of the contributions made by psychologists in the development of a technique described to replace direct questionnaires in personal surveys, some methodology in human ethology, and a treatise covering a topic of international concern, early nutritional deprivation research. All reflect in some way Grant's great concern for methodology.