old age, also called senescence , in human beings, the final stage of the normal life span. Definitions of old age are not consistent from the standpoints of biology, demography (conditions of mortality and morbidity), employment and retirement, and sociology. For statistical and public administrative purposes, however, old age is frequently defined as 60 or 65 years of age or older.
Old age has a dual definition. It is the last stage in the life processes of an individual, and it is an age group or generation comprising a segment of the oldest members of a population. The social aspects of old age are influenced by the relationship of the physiological effects of aging and the collective experiences and shared values of that generation to the particular organization of the society in which it exists.
There is no universally accepted age that is considered old among or within societies. Often discrepancies exist as to what age a society may consider old and what members in that society of that age and older may consider old. Moreover, biologists are not in agreement about the existence of an inherent biological cause for aging. However, in most contemporary Western countries, 60 or 65 is the age of eligibility for retirement and old-age social programs, although many countries and societies regard old age as occurring anywhere from the mid-40s to the 70s.
State institutions to aid the elderly have existed in varying degrees since the time of the ancient Roman Empire. England in 1601 enacted the Poor Law, which recognized the state’s responsibility to the aged, although programs were carried out by local church parishes. An amendment to this law in 1834 instituted workhouses for the poor and aged, and in 1925 England introduced social insurance for the aged regulated by statistical evaluations. In 1940 programs for the aged came under England’s welfare state system.
In the 1880s Otto von Bismarck in Germany introduced old-age pensions whose model was followed by most other western European countries. Today more than 100 nations have some form of social security program for the aged. The United States was one of the last countries to institute such programs. Not until the Social Security Act of 1935 was formulated to relieve hardships caused by the Great Depression were the elderly granted old-age pensions. For the most part, these state programs, while alleviating some burdens of aging, still do not bring older people to a level of income comparable to that of younger people.
The physiological effects of aging differ widely among individuals. However, chronic ailments, especially aches and pains, are more prevalent than acute ailments, requiring older people to spend more time and money on medical problems than younger people. The rising cost of medical care has caused a growing concern among older people and societies, in general resulting in constant reevaluation and reform of institutions and programs designed to aid the elderly with these expenses.
In ancient Rome and medieval Europe the average life span is estimated to have been between 20 and 30 years. Life expectancy today has expanded in historically unprecedented proportions, greatly increasing the numbers of people who survive over the age of 65. Therefore, the instances of medical problems associated with aging, such as certain kinds of cancer and heart disease, have increased, giving rise to greater consideration, both in research and in social programs, for accommodating this increase.
Certain aspects of sensory and perceptual skills, muscular strength, and certain kinds of memory tend to diminish with age, rendering older people unsuitable for some activities. There is, however, no conclusive evidence that intelligence deteriorates with age, but rather that it is more closely associated with education and standard of living. Sexual activity tends to decrease with age, but if an individual is healthy there is no age limit for its continuance.
Many of the myths surrounding the process of aging are being invalidated by increased studies in gerontology, but there still is not sufficient information to provide adequate conclusions.
Demographic and socioeconomic influences
In general the social status of an age group is related to its effective influence in its society, which is associated with that group’s function in productivity. In agrarian societies the elderly have a status of respectability. Their life experiences and knowledge are regarded as valuable, especially in preliterate societies where knowledge is orally transmitted. The range of activities in these societies allows the elderly to continue to be productive members of their communities.
In industrialized nations the status of the elderly has altered as the socioeconomic conditions have changed, tending to reduce the status of the elderly as a society becomes more technologically oriented. Since physical disability is less a factor in productive capability in industrialized countries, this reduction in social status is thought to have been generated by several interrelated factors: the numbers of still able-bodied older workers outstripping the number of available employment opportunities, the decline in self-employment which allows a worker to gradually decrease activity with age, and the continual introduction of new technology requiring special training and education.
Although in certain fields old age is still considered an asset, particularly in the political arena, older people are increasingly being forced into retirement before their productive years are over, causing problems in their psychological adaptations to old age. Retirement is not regarded unfavourably in all instances, but its economic limitations tend to further remove older people from the realm of influence and raise problems in the extended use of leisure time and housing. As a consequence, financial preparation for retirement has become an increased concern for individuals and society. For an essay on retirement, medical care, and other issues affecting the elderly, see John Kenneth Galbraith’s Notes on Aging, a Britannica sidebar by the distinguished economist, ambassador, and public servant.
Familial relationships tend to be the focus of the elderly’s attention. However, as the family structure in industrialized countries has changed in the past 100 years from a unit encompassing several generations living in close proximity to self-contained nuclear families of only parents and young children, older people have become isolated from younger people and each other. Studies have shown that as a person ages he or she prefers to remain in the same locale. However, the tendency for young people in industrialized countries to be highly mobile has forced older people to decide whether to move to keep up with their families or to remain in neighbourhoods which also change, altering their familiar patterns of activity. Although most older people do live within an hour from their closest child, industrialized societies are faced with formulating programs to accommodate increasing numbers of older people who function independently of their families.
A significant factor in the social aspects of old age concerns the values and education of the generation itself. In industrialized countries especially, where changes occur more rapidly than in agrarian societies, a generation born 65 years ago may find that the dominant mores, expectations, definitions of the quality of life, and roles of older people have changed considerably by the time it reaches old age. Formal education, which usually takes place in the early years and forms collective opinions and mores, tends to enhance the difficulties in adapting to old age. However, resistance to change, which is often associated with the elderly, is being shown to be less an inability to change than a trend in older people to regard life with a tolerant attitude. Apparent passivity may actually be a choice based on experience, which has taught older people to perceive certain aspects of life as unchangeable. Adult education programs are beginning to close the generation gap; however, as each successive generation reaches old age, bringing with it its particular biases and preferences, new problems arise requiring new social accommodations.