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Aging is best described as the accumulation of changes over time. Though human aging can be thought of as occurring at every moment of the life span (people exist within a continuous process of change), the term aging has been accepted by the scholarly community as a reference to the changes that occur at the very end of a long life span. Gerontology, which focuses on the social, psychological, and biological aspects of aging, and geriatrics a medical subspecialty, are the study of the aging process. While numerous ancient Egyptian and Greek texts, as well as texts or written discussions from the Middle Ages, have been uncovered that discuss both the aging process and how to best care for older adults, the scientific investigation of aging is less than five decades old.

Aging is a multidimensional, multidisciplinary area of scientific investigation. Biologists study aging by investigating genes, metabolism, proteins, and free radical agents. Physiologists investigate aging by documenting the wear and tear on the body (muscles, bones, and organs) over time. Psychologists investigate changes in cognitive functions, personality, emotional regulation, and one's ability to accomplish everyday tasks in old age. Sociologists investigate the demographics of aging, intergenerational relationships, changes in societies that reflect and influence older adults, institutions that have been created to care for frail older adults, and how age serves as a meaningful construct within culture and politics. Communication scholars have investigated the changing nature of language as the population ages; the changing nature of family, friends, and professional/health provider relationships in older adulthood; age as an intergroup category; intercultural communication differences in aging; and communicative competencies that predict successful adaptation to the aging process.

Successful Aging

Social theories of “successful aging” (a term that is considered by some to be inappropriate), healthy aging, or optimal aging have attempted to describe and explain how individual and societal social choices are related to a high quality of life in older adulthood. Several theories/perspectives of optimal aging have had significant influence upon social research into the aging process. Disengagement theory asserts that to age successfully older adults must withdraw from society, as society simultaneously withdraws from them. Activity theory states that to achieve optimal aging, the older adult must remain physically, psychologically, and socially active. Consistency theorists argue that the ability to maintain a consistent life throughout adulthood and older adulthood is critical for optimal aging. Socioenvironmental scholars consider the significant impact of the environment upon older adults.

Those who can manage some level of control or who live within an environment that manages the special physical, psychological, social, and spiritual needs of older adults will be more likely to optimally age. Recently the socioemotional selectivity theory of aging has been utilized to test the communicative behavior of older adults across a wide variety of health contexts. The accepted profile of optimal aging based upon scientific investigations includes maintaining a physically healthy lifestyle (no smoking, moderate alcohol use, proper nutrition, regular exercise, and regular contact with a physician); financial stability; a strong social support network of family and friends; continuous learning and cognitive challenges to exercise the brain; and engagement with the community through religion or volunteering. Each of the theories/perspectives of optimal aging and the core ingredients of maintaining and achieving optimal aging well into older adulthood has a communicative component. Communication scholars have placed communication at the core of any understanding of optimal aging.

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