In 1986, two Dutch researchers advanced a provocative hypothesis: many societies were undergoing a “Second Demographic Transition” that would lead to durably low birth rates and high degrees of ...

Following the launch of the recent United Nations Population Fund (UNFPA) report on the state of the world’s population, there has been much worry that the size of Bangladesh’s population has now ...

Studies of evolutionary change require an estimate of fitness, and lifetime reproductive success is widely used for this purpose. However, many species face a trade-off between the number and quality ...

BACKGROUND Despite a long interest in the historical fertility transition, there is still a lack of knowledge about disaggregated patterns that could help us understand the mechanisms behind the ...

Changes in the demographic makeup of populations are a significant factor contributing to the rise of singledom. In the wake of what researchers call the second demographic transition, fewer people ...