Gerontology is the study of the aged at a scientific, psychological, social, or philosophical level. The development of this field is closely linked to political activity, because of federal funding and legislation for aging issues.
Scientific research into the process of aging is concerned with learning how and why the human organism undergoes change with age. Numerous theories of aging have been advanced.
In the field of psychologists to study healthy older adults and come to conclusions about them because each person ages in a different way.
Social gerontology is concerned with the roles of the elderly in society. Research and debate center around potential useful roles and decision-making functions of older people. Philosophical studies of aging have to do with understanding the meaning of life on a personal level.
Reference :
Farrell J : Nursing Care of the Older Person, J.B. Lippincott Company, Philadelphia, 1990.