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16 Cards in this Set
- Front
- Back
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Age Structure
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The distribution of people across various age cohorts.
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Baby boomers
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The generation of Americans born between 1946 and 1964.
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Child Dependency Ratio
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The number of persons younger than 18 relative to those of working age.
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Demographic Transition
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The shift from high mortality and fertility to low mortality and fertility that causes population aging; occurs in three stages.
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Demography
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The study of the basic population processes of fertility, mortality, and migration.
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Echo boomers
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The generation of Americans born between 1977 and 1994.
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Elderly Dependency Ratio
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The number of persons aged 65 or older per 100 persons of working age.
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Fertility Rate
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A measure of the incidence of births or the inflow of new lives into a population.
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Life Expectancy
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The average number of years people in a given population can expect to live; the mean age at death; a measure of the combined outcome of many births and deaths calculated by taking the sum of the ages of death of all individuals in the given population and dividing it by the number of people in that population.
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Life Span
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The longest number of years any member of a species has been known to survive.
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Migration
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The movement of people across borders
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Mortality Rate
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The incidence of death in a population.
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Population Aging
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Occurs when the proportion of the older people relative to younger generations increases; a term that refers to an increase in the proportion of people 65 or older.
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Race Crossover
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Among the oldest-old, the mortality rate for African Americans falls below that of whites.
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Sex Ratio
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The ratio of males to females; determined by the number of males relative to females at birth and by different survival rates over the life course.
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Total Dependency Ratio
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The combined ratio of children and older people to workers.
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