As an anthropologist with interests in ecology, evolution, and economics, my research is highly interdisciplinary, and does not fit comfortably within any of the traditional subdisciplines of anthropology, nor even on one side or the other of the natural science/social science divide. My research has its theoretical bases in both biology (particularly evolutionary ecology) and social sciences such as microeconomics, game theory, and sociocultural anthropology. For over 30 years I have helped shape the field of human behavioral ecology, and testing the resulting models and hypotheses with ethnographic data collected in small-scale societies.