Ronald Lee

Evolutionary aspects of demography, sociality, and intergenerational transfers

The behavior of many species has a social aspect, ranging from bacteria to humans. Intergenerational transfers such as parental or grandparental care for offspring are one important form of sociality. Sharing and cooperation within a group of individuals are others. Sociality helps shape the evolution of the demographic life history of each species, and in turn a species’ demography shapes the contributions of sociality to reproductive fitness and may promote its evolution. I will consider various aspects of human and other sociality and life history from this perspective, including the age shapes of mortality and fertility, menopause, post-reproductive survival, food sharing, sexual dimorphism and time preference.