Despite a long history of study, consensus on a human-typical mating system remains
elusive. While a simple classification would be useful for cross-species comparisons, across …

Women and girls cooperate with each other across many domains and at many scales.
However, much of this information is buried in the ethnographic record and has been …

A contemporary classic about love now completely revised and updated. From love at first
sight and infidelity to hook-up culture and “slow love,” Dr. Helen Fisher, the biological …

Small populations are susceptible to high genetic loads and random fluctuations in birth and
death rates. While these selective forces can adversely affect their viability, small …

Demography is central to biological, behavioral, and cultural evolution. Knowledge of the
demography of prehistoric populations of both Homo sapiens and earlier members of the …

Theoretical developments in sociocultural anthropology have transformed the study of
kinship. Here, we review these theoretical developments, consider their influence on …

Maternal grandmothers invest more in childcare than paternal grandmothers. This bias is
large where the expression of preferences is unconstrained by residential and lineage …

The social contexts in which children develop have transformed over recent decades, but
also over millennia. Modern parenting practices have diverged greatly from ancestral …

The most significant change in hunter-gatherer studies has been the shift from expecting
hunter-gatherers to have similar properties wherever they are found to recognizing that …

Although cooperative social networks are considered key to human evolution, emphasis has
usually been placed on the functions of men's cooperative networks. What do women's …