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Population pyramid. A population pyramid (age structure diagram) or " age-sex pyramid " is a graphical illustration of the distribution of a population (typically that of a country or region of the world) by age groups and sex; it typically takes the shape of a pyramid when the population is growing. [1] Males are usually shown on the left and ...
Age stratification could also be defined as a system of inequalities linked to age. In Western societies, for example, both the old and the young are perceived and treated as relatively incompetent and excluded from much social life. Age stratification based on an ascribed status is a major source inequality, and thus may lead to ageism.
The Leslie matrix is a discrete, age-structured model of population growth that is very popular in population ecology named after Patrick H. Leslie. The Leslie matrix (also called the Leslie model) is one of the most well-known ways to describe the growth of populations (and their projected age distribution), in which a population is closed to migration, growing in an unlimited environment ...
The concept of adulthood has legal and socio-cultural definitions. The legal definition of an adult is a person who is fully grown or developed. This is referred to as the age of majority, which is age 18 in most cultures, although there is a variation from 15 to 21. The socio-cultural definition of being an adult is based on what a culture ...
Age adjustment is commonly used when comparing prevalences in different populations. It is not used to derive life expectancy, which is calculated directly from the age-specific mortality rates, with no reference population required. [citation needed] Age adjustment is also not appropriate when attempting to compare population totals (for ...
Demographic dividend, as defined by the United Nations Population Fund (UNFPA), is "the economic growth potential that can result from shifts in a population’s age structure, mainly when the share of the working-age population (15 to 64) is larger than the non-working-age share of the population (14 and younger, and 65 and older)". [1]
Coming-of-age story. In genre studies, a coming-of-age story is a genre of literature, theatre, film, and video game that focuses on the growth of a protagonist from childhood to adulthood, or "coming of age". Coming-of-age stories tend to emphasize dialogue or internal monologue over action and are often set in the past.
Aging has a significant impact on society. People of different ages and gender tend to differ in many aspects, such as legal and social responsibilities, outlooks on life, and self-perceptions. Young people tend to have fewer legal privileges (if they are below the age of majority ), they are more likely to push for political and social change ...