Jonathan Stieglitz

Assistant Professor
Institute for Advanced Study in Toulouse (IAST)
University of Toulouse 1: Capitole

IAST Program Director of Anthropology


My research explores how ecological and social factors affect variability in behavior, psychology, and physiology in small-scale societies. To address research questions I use principles from behavioral ecology and life history theory, which attempt to explain modern human variation as an adaptive response to trade-offs between investments in competing demands.

I collaborate on the Tsimane Health and Life History Project ( The project aims to study growth, senescence, demography, economics and health under conditions representative of human evolutionary history.


  • Cristia A, Dupoux E, Gurven M, Stieglitz J. (Forthcoming). Child-directed speech is infrequent in a forager-farmer population: a time allocation study. Child Development.