Ph.D.
Department of Anthropology

Mailing Address:
Department of Anthropology
Campus Box 103
PO Box 173364 
Denver, CO 80217-3364

Physical Location:
Auraria Campus
North Classroom
Suite 3031

Office Hours:
TuTh 11:00am - 12:00pm, by appointment

I am a biological anthropologist by training and Professor of Health and Behavioral Sciences at the University of Colorado Denver. My main area of expertise is "human ecology," that is, evolutionary perspectives on aspects of both human biology and behavior. Within the biological arena my interests have focused on various aspects of maternal and child health including nutrition, growth and development, and determinants of fertility. Within the area of behavioral ecology, I have been interested in life history theory and parental investment as well as an examination of human social norms such as reciprocity, altruism, bargaining, and punishment. All of these areas are represented in my ongoing research project among the Au lowland forager-horticulturalists of Papua New Guinea. 

My research among the Au has considered such topics as:

  • effects of resource availability on birth interval duration
  • cumulative effects of repeated pregnancies and prolonged lactation on women's health
  • influences of maternal body composition on the effectiveness of breast-feeding as a natural contraceptive
  • the effects of recently introduced socioeconomic development and social stratification on hemoglobin levels, birth weights and growth
  • biases in parental investment by age and sex of children and the effects of such biases on child growth and neuromuscular development
  • effects of market integration on the outcome of economic experiments used to gauge bargaining behavior, reciprocity and fairness
  • effects of third-party punishment on bargaining and fairness. 

In the past, I have also collaborated on projects examining: (a) patterns of child growth and development in the United States, and (b) the utility of craniofacial data to try to reconstruct population relationships and movements in prehistory.

Ph.D., Anthropology (Biological) University of Michigan, 1991.

M.A., Anthropology (Biological) University of Michigan, 1985.

B.A., Anthropology (Magna Cum Laude with High Honors) Brandeis University, 1984.

2014. Cruel to be kind: Effects of sanctions and enforcers on generosity in Papua New Guinea. (with I. Mueller and J. Morse).  Chapter 7 in J. Ensminger and J. Henrich (eds.), Experimenting with Social Norms: Fairness and Punishment in Cross-Cultural Perspective.Sage Foundation Publishers. pp. 177-196.

2011.The ‘spiteful’ origins of human cooperation. (with F.W. Marlowe, J.C. Berbesque, C. Barrett, A. Bolyanatz, and M. Gurven). Proceedings of the Royal Society London – Biology 278:2159-2164.

2010a. Markets, religion, community size and the evolution of fairness and punishment.  (with J. Henrich, R. McElreath, J. Ensminger, A. Barr, C. Barrett, A. Bolyanatz, J.C. Cardenas, M. Gurven, E. Gwako, N. Henrich, C. Lesorogol, F. Marlowe, and J. Ziker). Science 327:1480-1484.

2009. Breastfeeding structure as a test of parental investment theory in Papua New Guinea.  American Journal of Human Biology 21:635-642.

2008. More ‘altruistic’ punishment in larger societies.  (with F.W. Marlowe, J.C. Berbesque, A. Barr, C. Barrett, A. Bolyanatz, J.C. Cardenas, J. Ensminger, M. Gurven, L. Gwako, J. Henrich, N. Henrich, C. Lesorogol, and R. McElreath).  Proceedings of the Royal Society London - Biology 275:587-590.

2007. Diagnosis of rickets and reassessment of prevalence among rural children in northern China.  (with M.A. Strand, J. Perry, M. Jin, P.R. Fischer, P. Zhang, W. Xi, and S. Li). Pediatrics International 49:202-209.

2006. Costly punishment across human societies.  (with J. Henrich, R. McElreath, J. Ensminger, A. Barr, C. Barrett, A. Bolyanatz, J.C. Cardenas, M. Gurven, L. Gwako, N. Henrich, C. Lesorogol, F. Marlowe, and J. Ziker). Science 312:1767-1770.

Introduction to Public Health

Introduction to Biological Anthropology

Human Ecology in the Health & Behavioral Sciences

Human Reproductive Ecology