The rise in marital fertility in East Asian societies with very low fertility has been reported through analyses using the age-specific marital fertility rate (AMFR). Though the measure is often considered related to the average number of children married women have (CMF), we demonstrated that...

In a population with Gamma-distributed individual frailty and Gompertz-distributed mortality there is a closed-form analytic expression for calculating the life-expectancy integral. Several simplifications of the resulting formula serve as plausible approximations.

The literature on fertility and happiness has neglected comparative analysis. We investigate the fertility-happiness association using data for 86 countries. We find that globally, happiness decreases with the number of children. This association, however, is strongly modified by individual and...

Combining cohort and period perspectives a method is developed that follows the process of childbearing postponement and recuperation and its reflection in total period fertility levels and trends in low fertility populations. It is complementary to methods pioneered by Bongaarts and Feeney...

Mortality decline has historically been a result of reductions in the level of mortality at all ages. The slope of mortality increase with age has been remarkably stable. A number of leading researchers on aging, however, suggest that the next revolution of longevity increase will be the result...