Partisanship, Voting, and the Dopamine D2 Receptor Gene (with James Fowler)
Friends Moderate and Association Between the DRD4 Gene and Political Ideology (with Jaime Settle, James Fowler, and Nicholas Christakis)
The Heritability of Partisan Attachment (with Jaime Settle and James Fowler)
The Role of Egalitarian Motives in Altruistic Punishment (with Tim Johnson, James Fowler, Richard McElreath, and Oleg Smirnov)
The Behavioral Logic of Collective Action: Partisans Cooperate and Punish More Than Non-Partisans (with Tim Johnson, James Fowler, Richard McElreath, and Oleg Smirnov)
Social Preferences and Political Participation (with James Fowler)
Genetic Variation in Preferences for Giving and Risk Taking (with David Cesarini, Magnus Johannesson, Paul Lichtenstein, and Bjorn Wallace), Quarterly Journal of Economics, Forthcoming. Appendix
Two Genes Predict Voter Turnout (with James Fowler) Journal of Politics, 70 (3): 579-594 (July 2008)
Genetic Variation in Political Participation (with James Fowler and Laura Baker) American Political Science Review, 102 (2): 233-248 (May 2008)
Heritability of Cooperative Behavior in the Trust Game (with David Cesarini, James Fowler, Magnus Johannesson, Paul Lichtenstein, and Bjorn Wallace), Proceedings of the National Academy of Sciences, 105 (10): 3721-3726 (11 March 2008)
Egalitarian Motives in Humans (with James Fowler, Tim Johnson, Richard McElreath, and Oleg Smirnov), Nature, 446: 794-796, doi:10.1038/nature05651 (12 April 2007)