Transdisciplinary research at the interface of biology, social sciences, mathematics, and computational science.
I use mathematical models and agent-based simulations to study complex evolutionary processes in biological and social systems. Over the last several years, my research interests have mostly concentrated on the following areas:
   - Human origins
   - The evolution of social complexity
   - Human behavior in cooperation and conflict
   - Cultural evolution
   - Social norms and beliefs
   - Social institutions
Previously I have also worked on
   - Speciation and biological diversification
   - Sexual conflict and sexual selection
   - Coevolution and frequency-dependent selection
   - Fitness landscapes
   - Dynamics and maintenance of genetic variation
   - Phenotypic plasticity and genotype-environment interaction

I am a Visiting Fellow at the Institute for Advanced Studies Toulouse, Toulouse School of Economics, France, a Research Affiliate at the School of Anthropology, University of Oxford, UK, and an External Faculty at the Complexity Science Hub Vienna, Austria. I was the Associate Director for Scientific Activities at the National Institute for Mathematical and Biological Synthesis (NIMBioS) during the life of the NSF award (2008-2021) and the Director of the Center for the Dynamics of Social Complexity (DySoC) (2018-2022).

My research has been supported by the NIH, the NSF, the John Templeton Foundation, and the DOD (Army Research Office, Minerva Research Initiative, Office of Naval Research, Air Force Office of Scientific Research).