Fertility rates vary considerably across and within societies, and over time. Over the last
three decades, social demographers have made remarkable progress in documenting these …

Despite recent advances in our understanding of the genetic basis of human behavior, little
of this work has penetrated into formal demography. Very few demographers worry about …

Demographic analysis seeks to understand how individual microlevel decisions about
childbearing, marriage and partnering, geographic mobility, and behaviors that influence …

This paper proposes core innovations in the strategy of research on demographic
behaviour. One aim is a shift of attention away from events and towards a focus on dynamic …

Objective. To develop an evolutionary model that integrates human parenting and family
formation with ideas about the evolved functions of distinctive human characteristics, such …

Sibling competition is widespread among bird and animal species and sometimes leads to
siblicide. By influencing the strategies that siblings employ in their struggles for dominance …

T his chapter considers the evolutionary biology of human fertility, parental investment, and
mating and is designed to provide a broad overview of the topic. It focuses on three themes …

Cultural evolutionists have long been interested in the problem of why fertility declines as
populations develop. By outlining plausible mechanistic links between individual decision …

Kinship ties-the close relationships found within the family-have been a central focus of
evolutionary biological analyses of social behavior ever since biologist William Hamilton …

The purpose of this article is to develop a model of life history theory that incorporates
environmental influences, contextual influences, and heritable variation. I argue that …