Theory of aging, proposed by Neugarten and others, which holds that in order to age successfully a person must remain as active as possible. Compare disengagement theory.
The theory that older people naturally want to remain active. Developed in the 1970s as a reaction to 'disengagement theory'. While there is evidence that those who remain active are more likely to retain skills and abilities, not all older people want lots of activities in their lives.
is a theory of knowledge and learning developed from the work of the Soviet psychologist Vygotsky, in which knowledge is seen to function as a thinking tool in the creation of society.