CASL Lesson 4

The generation of Americans born between 1977 and 1994.

The generation of Americans born between 1946 and 1964.

The study of the basic population processes of fertility, mortality and migration.

The distribution of people across various age cohorts.

Occurs when the portion of older people relative to younger generations increases; a term that refers to an increase in the proportion of people 65 or older.

The longest number of years any member of a species has been known to survive.

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 a given population and dividing it by the number of people in that population.

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.

A measure of the incidents of births or the inflow of new lives into a population.

The incidence of death in a population.

The movement of people across borders.

A bar chart that reflects the distribution of a population by age and sex.

The shift from high mortality and fertility to low mortality and fertility that causes population aging; occurs in three stages.

The number of persons age 65 or older per 100 persons of working age.

The number of persons younger than 18 relative to those of working age.

The combined ratio of children and older people to workers.

Among the oldest-old, the mortality rate for African Americans falls below that of whites.