My research interests include evolutionary and cross-cultural approaches to understanding personal relationships, sexual strategies, romantic attachment styles, and gender differences in human mating. I am also interested in the "Big Five" model of personality traits, risk factors for HIV/AIDS, and predictors of both sexual aggression and domestic violence across cultures.

I am the Founding Director of the International Sexuality Description Project (Schmitt et al., 2003), a cross-cultural survey study that included samples from 56 nations representing 6 continents, 13 islands, and 28 languages. I am currently beginning the second wave of the ISDP and am looking for additional research collaborators. If you are interested in finding out more about the ISDP, please contact me.