The Fourth Edition of the Handbook of Aging and the Social Sciences reflects the growth of ideas, information, and research literature on the social aspects of aging. Building upon the first three editions, the Handbook is substantially expanded with 25 new and distinguished contributors and nearly a dozen new topics. Intended for use by researchers, professional practitioners, and students in the field of aging, the Handbook is divided into four sections, covering theory and research methodology, aging and social structure, social factors and social institutions associated with aging, and social interventions. Suitable as both a textbook and a reference tool, the Handbook represents a comprehensive source for information on aging and the social sciences.