A fundamental reversal of the traditional fertility-development relationship has occurred in highly developed countries so that further socioeconomic development is no longer associated with decreasing fertility, but with increasing fertility. In this paper, we seek to shed light on the...

We examine how family, money, and health explain variation in life satisfaction (“happiness”) over the life cycle. Globally, these factors explain a substantial fraction of happiness, increasing from 12 percent in young adulthood to 15 percent in mature adulthood. Health is the most...

The 1970s worries of the "population bomb" were replaced in the 1990s with concerns of population aging driven by falling birth rates. Across the developed world, the nearly universally-used fertility indicator, the period total fertility rate, fell well below two children per woman. However,...