Handbook of the psychology of aging ninth edition tackles both the biological and environmental influences on behavior and the reciprocal interface between changes in the brain and behavior that span the adult lifespan this information is very important to many features of daily life from workplace to family and in public policy matters. Handbook of the psychology of aging eighth edition tackles the biological and environmental influences on behavior as well as the reciprocal interface between changes in the brain and behavior during the course of the adult life span the psychology of aging is important to many features of daily life from workplace and the family to public policy matters. Handbook of the psychology of aging eighth edition tackles the biological and environmental influences on behavior as well as the reciprocal interface between changes in the brain and behavior during the course of the adult life span the psychology of aging is important to many features of daily life from workplace and the family to public policy matters. Handbook of the psychology of aging third edition describes the psychology of adult development and aging this book is organized into four parts encompassing 28 chapters that cover the basic behavioral changes and capacities occurring with advancing age the first part deals with the history concept and models of the psychology of aging. Most of the editions of the handbook of the psychology of aging have contained a chapter on theoretical issues some combined with some methodological issues and or the history of geropsychology in this introductory chapter some of the major theoretical perspectives in studying normal aging from a lifespan perspective are summarized