demographics - study of population Flashcards
doubling time
time it takes for a population to naturally double
formula is 70/rate of increase
Malthusianism
1798 Thomas Malthus
world can only support a finite population
if it grew larger than this one of two things will happen to balance it out
either decrease in fertility rates or catastrophic events
primitive
high birth rate
low life expectancy
early expanding
high birth and death rate poor health care limited education improving life expectancy agrarian society
late expanding
lowering death rate high birth rate improving health care and education increased life expectancy lower dependency ratio
stationary
stationary-industrialized and no longer agrarian
lowering death rate
declining birth rate
good health care
increased education and life expectancy
low dependency ratio but will increase when the 30-60 year olds retire
contracting
contracting(zero growth)
low birth and death rate
high levels of health care, education and life expectancy
aging population
natural increase
births - deaths
birth rate
total live births / total population x 1000
death rate
total death/ total population x 1000
net migration
immigration - emigration
infant mortality rate
infant deaths < 1 years / total live births x1000
fertility rate
live births/ total women ages 15-44 x 1000
dependency ratio
% of workers vs % of non workers
