||To enable younger people to assume important roles, a society must encourage its older people to disengage from their previous roles and to take on roles more appropriate to their physical and mental decline. This theory is considered a functionalist explanation of the aging process.
||Older people benefit themselves and their society if they continue to be active. Their positive perceptions of the aging process are crucial to their ability to remain active. This theory is considered an interactionist explanation of the aging process.
||Older people experience age-based prejudice and discrimination. Inequalities among the aged exist along the lines of gender, race/ethnicity, and social class. This theory falls into the more general conflict theory of society.