Political Science, Department of


Date of this Version

October 2006


This study investigated the impact of testosterone and cortisol on aggression in a crisis simulation game. We found a significant relationship between level of testosterone and aggression. Men were much more likely to engage in aggressive action than women. They were more likely to lose their fights as well. In addition, we found a significant inverse relationship between cortisol level and aggression. We end with some speculation about why we did not find victory effects in this population.