Dutch-American demographer.- John Bongaarts
3 related topics
Capability to produce offspring through reproduction following the onset of sexual maturity.
Bongaarts proposed a model where the total fertility rate of a population can be calculated from four proximate determinants and the total fecundity (TF).
Practice of terminating a pregnancy based upon the predicted sex of the infant.
A 2013 study by John Bongaarts based on surveys in 61 major countries calculates the sex ratios that would result if parents had the number of sons and daughters they want.
Total fertility rate that (if sustained) leads to each new generation being less populous than the older, previous one in a given area.
John Bongaarts and Griffith Feeney have suggested that this tempo effect is driving the decline of measured fertility rate in the developed world.