The textbook on gerontopsychology provides a clear overview of the fundamentals and mechanisms of aging and highlights approaches for successful and healthy aging in the context of lifespan psychology. Theories of gerontopsychology, empirical findings, and application examples from various disciplines (psychology, neuroscience, movement sciences, biology, etc.) illuminate the aging process in all its facets. Pathological aging processes and age-related diseases are described alongside strategies for prevention and intervention. The social context (work, family, society) of aging development is always taken into account.