Spanning the biological and psychosocial aspects of aging, this upper-level undergraduate and graduate text integrates current findings in biology, psychology, and the social sciences to provide comprehensive, multidisciplinary coverage of the aging process. This new edition incorporates the tremendous amount of research that has come to light since the first edition was published. From a physical perspective, the text examines age-related changes and disease-related processes, the demography of the aging population, aging theories, and how to promote optimal aging. Coverage of the psychosocial aspects of aging encompasses mental health, stress and coping, spirituality, and caregiving in later years.