SOC312H1 Lecture Notes - Lecture 4: Old Kingdom Of Egypt, Dependency Ratio, Population Momentum
Document Summary
All demographic phenomena are directly/indirectly determined by age. All demographic phenomena is conditioned by sex i. e. females enjoy lower death rates than males in most circumstances. Interested in 3 segments get a sense of economic dependency" burden in a given society. * dependency ratio >100 would indicate more dependents than workers in population (higher ratio= greater the dependency burden" on working population) Age-sex percentages can be plotted to make an age pyramid. Age pyramid: pictorial representation of the age and sex composition of the population. In canada"s population age pyramid, interesting feature= baby boom generation (largest segment) Shifts in age composition are produced mainly by changes in fertility and (to a lesser degree) mortality. Young population is produced by high fertility rates. Declining population has a growing proportion of people over 65, and a small proportion of children ** mortality plays a much less of a role in changing the age distribution of a population.
