Any form of learning provided for adults. In the U.S. the University of Wisconsin was the first academic institution to offer such programs (1904). Empire College of the State University of New York was the first to be devoted exclusively to adult learning (1969). Continuing education includes such diverse methods as independent study; broadcast, videotape, online, and other forms of distance learning; group discussion and study circles; conferences, seminars, and workshops; and full- or part-time classroom study. Remedial programs, such as high-school equivalency and basic literacy programs, are common. In recent years the variety of subject matter has expanded greatly to include such topics as auto repair, retirement planning, and computer skills. Seealso Chautauqua movement.
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Period in the human life span in which full physical and intellectual maturity have been attained. Adulthood is commonly thought of as beginning at age 20 or 21. It includes middle age (commencing around age 40) and old age (from about age 60). Physically, it is characterized by the peaking (around age 30) and gradual decline of bodily functioning; the postpeak phase includes diminished acuity of the senses, reduction in muscular and skeletal mass, buildup of cholesterol in the arteries, weakening of the heart muscle, and diminished production of hormones. Some slowing in the rate of central-nervous-system processing also begins with middle age, but it is generally compensated for by an increased capacity to retain practical information and apply accumulated cultural knowledge. In old age, most individuals experience a significant decline in physical capacity, and many eventually also suffer impaired mental function.
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The term adult has three distinct meanings. It indicates a grown man or woman. It may also mean a plant or animal that has reached full growth, or one who is legally of age; as opposed to a minor.
Adulthood can be defined in terms of biology, psychological adult development, law, personal character, or social status. These different aspects of adulthood are often inconsistent and contradictory. A person may be biologically an adult, and have adult behavioral characteristics but still be treated as a child if they are under the legal age of majority. Conversely one may legally be an adult but possess none of the maturity and responsibility that define adult character.
Coming of age is the event; passing a series of tests to demonstrate the child is prepared for adulthood; or reaching a specified age, sometimes in conjunction with demonstrating preparation. Most modern societies determine legal adulthood based on reaching a legally-specified age without requiring a demonstration of physical maturity or preparation for adulthood.
Adult, especially in the sense of entertainment or other diversion, frequently appears as a euphemism for being related to sexual behaviour. Adult toys and adult games—which terms refer to games and toys that are closely related to sex, do not generally refer only to games or toys with which children are simply incompatible—are in this category, for example. This usage does indicate unsuitability for children, but the more immediate meaning is closer to "not legal for children." Adult education, however, does simply mean education for adults, especially for those past the usual age for either high school or university.
Some propose that moving into adulthood involves an emotional structuring of denial. This process becomes necessary to cope with one's own behavior, especially in uncomfortable situations, and also the behavior of others.
There are some qualities that symbolize adultness in most cultures. There is not always a correlation between the qualities and the physical age of the person.
The adult character comprises: