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Multiphasic response theory
Assumes the widespread fertility declines in a society occur in a context of rising socioeconomic opportunities, coupled with sustained high rates of natural increase due to declining death rates (in infancy and childhood)
Pre-decline
________ rise in fertility = every case of demographic transition.
Adjustment theorists
New socioeconomic opportunities in a context of industrialization and urbanization made large families less desirable than before.
Post-transitional regime
Low fertility, high life expectancy, low rates of natural increase, high levels of demographic aging.
Population projection
Computational exercise intended to determine a future populations size and age- sex distribution.
Innovation theorists
Emphasize the role played by new contraceptive technologies and new ideas emphasizing small families.
Population momentum
The amount of unavoidable growth that is built into the current age structure of the population.
Population of the world in 2014
7.238 billion
Doubling time
The number of years it would take for the population to double if its current rate of growth were to remain unchanged
Multiphasic response theory
Assumes the widespread fertility declines in a society occur in a context of rising socioeconomic opportunities, coupled with sustained high rates of natural increase due to declining death rates (in infancy and childhood)
Transitional populations
Countries that have recently completed or are approaching the end of demographic transition
Delayed transition populations
Countries where the demographic transition has only recently begun
Innovation theorists
Emphasize the role played by new contraceptive technologies and new ideas emphasizing small families
Adjustment theorists
New socioeconomic opportunities in a context of industrialization and urbanization made large families less desirable than before
Population growth rate
Expected to continue declining steadily
Post-transitional regime
Low fertility, high life expectancy, low rates of natural increase, high levels of demographic aging
Population projection
Computational exercise intended to determine a future populations size and age-sex distribution
Note 
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