Sociology 1020 Chapter Notes - Chapter 16: Statistical Model, Demographic Transition, Life Table
7 Feb 2015
School
Department
Course
Professor
Document Summary
Demography: the study of population; examines how size, structure, and rate of growth are affected by rates of fertility (birth), mortality (deaths), and migration (movement). Crude birth rate (cbr): calculated by dividng the number of births occurring in a population in a given period of time by the total size of the population, expressed per thousand population. Crude death rate (cdr): calculated by dividing the number of deaths . These help us understand how births and deaths determine the rate of population growth. Rate of natural increase: measure of how fast the population is growing per year (difference between cbr and cdr) Positive checks: population growth can only be contained by war, famine, and disease. Preventive check: used by a society to avoid the endless cycle of population growth followed by insufficient food and rising mortality. Demographic transition theory: suggests that societies pass through a 3-stage process of change.
