Infertility rates and the number of couples seeking fertility care have increased worldwide
over the past few decades. Over 2.5 million cycles of assisted reproductive technologies are …

Neuro-biological variations in the timing of sexual maturation within a species are part of an
evolved strategy that depend on internal and external environmental conditions. An …

Using data from the first Census data set that includes complete measures of male biological
fertility for a large-scale probability sample of the US population (the 2014 wave of the Study …

The objective of this article is to describe levels, patterns, and trends in male fertility around
the world, using data that have been underutilized. By combining different data sources …

Is fertility relevant to evolutionary analyses conducted in modern industrial societies? This
question has been the subject of a highly contentious debate, beginning in the late 1980s …

Why do some females menstruate at all? Answering this question has implications for
understanding the tight links between reproductive function and organismal immunity. Here …

Perceivers hold ecology stereotypes—beliefs about how the environments others live in
shape their behavior. Drawing upon a life history perspective, we examine the stereotypes …

Humans are shaped by evolution through natural selection, as are all species. While
evolution is central to all biological processes, the key stage for competition and selection is …

Despite the tendency of some academic disciplines to assume that the nuclear family is
normative, the family takes a number of different forms cross-culturally. Regardless of family …

Studies of the association between wealth and fertility in industrial populations have a rich
history in the evolutionary literature, and they have been used to argue both for and against …