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  2. Population ageing - Wikipedia

    en.wikipedia.org/wiki/Population_ageing

    Population ageing is an increasing median age in a population because of declining fertility rates and rising life expectancy. Most countries have rising life expectancy and an ageing population, trends that emerged first in developed countries but are now seen in virtually all developing countries. In most developed countries, the phenomenon ...

  3. Age stratification - Wikipedia

    en.wikipedia.org/wiki/Age_stratification

    Age stratification exists because processes in society ensure that people of different ages differ in their access to society's rewards, power, and privileges. In sociology, age stratification refers to the hierarchical ranking of people into age groups within a society. [1] Age stratification could also be defined as a system of inequalities ...

  4. Demography - Wikipedia

    en.wikipedia.org/wiki/Demography

    The Demography of the World Population from 1950 to 2100. Data source: United Nations — World Population Prospects 2017. Demography (from Ancient Greek δῆμος (dêmos) 'people, society' and -γραφία (-graphía) 'writing, drawing, description') [1] is the statistical study of human populations: their size, composition (e.g., ethnic group, age), and how they change through the ...

  5. Ageing - Wikipedia

    en.wikipedia.org/wiki/Ageing

    A map showing median age figures for 2017. Population ageing is the increase in the number and proportion of older people in society. Population ageing has three possible causes: migration, longer life expectancy (decreased death rate) and decreased birth rate. Ageing has a significant impact on society.

  6. Gerontology - Wikipedia

    en.wikipedia.org/wiki/Gerontology

    Society portal. v. t. e. Gerontology (/ ˌdʒɛrənˈtɒlədʒi / JERR-ən-TOL-ə-jee) is the study of the social, cultural, psychological, cognitive, and biological aspects of aging. The word was coined by Ilya Ilyich Mechnikov in 1903, from the Greek γέρων (gérōn), meaning "old man", and -λογία (-logía), meaning "study of". [ 1 ...

  7. Dependency ratio - Wikipedia

    en.wikipedia.org/wiki/Dependency_ratio

    The population structure of a country is an important factor for determining the economic status of their country. Japan is a great example of an aging population. They have a 1:4 ratio of people 65 years and older. This causes trouble for them because there is not enough people in the working-age population to support all of the elders.

  8. Aging and society - Wikipedia

    en.wikipedia.org/wiki/Aging_and_society

    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 ...

  9. Aging in place - Wikipedia

    en.wikipedia.org/wiki/Aging_in_place

    Aging in Place is an initiative of Partners for Livable Communities and the National Association of Area Agencies on Aging. It was developed to help America's communities prepare for the aging of their population and to become places that are good to grow up, live in and grow old.