gender
Age is socially constructed because notions of age vary around the world.
Different cultures fix age with different meanings and different values.
Eastern cultures tend to highly value age and wisdom, while Western cultures tend to highly value youth.
In Western societies, people take pains to appear younger than their biological age. These measures follow Erving Goffman's ideas of self-presentation in that people are trying to get others in society to perceive them as young.
Industrialization increases life expectancy by creating better conditions, better government social supports, and better access to healthcare.
There is currently a disparity in life expectancy between industrialized nations and non-industrialized nations.
1. Traditional Authority- which is based on custom, is the hallmark of tribal groups. Custom dictates basic relationships. Declines with industrialization but never dies out.
2. Rational-Legal Authority- based not on custom but on written rules. Rational means reasonable, and legal means part of the law.
3. Charismatic Authority- People are drawn to charismatic people because they believe an individual has been touched by God or has been endowed by nature with exceptional qualities.
Disengagement theory was the first theory of aging developed by social scientists.
The theory was developed by Elaine Cumming and Warren Earl Henry in their 1961 book "Growing Old. " Subsequently, the theory has been largely debunked.

