This authoritative reference work is an updated edition of the pioneering interdisciplinary resource in gerontology and geriatrics. It contains explanations of hundreds of terms, concepts, and issues related to the lives of older adults, as well as on the growing range of programs and services for the elderly provided by the professions, the communities, and government agencies. The entries were written by invited prominent scholars in biology, medicine, nursing, psychology, psychiatry, sociology, and social services.