Dr. Robin Edelstein talked about her research on how power/dominance relates testosterone and “unrestricted” sexual desires. In her talk she cited the recent example of David Petraeus (the former general and CIA chief), who resigned in disgrace after admitting an extra-marital affair. Why do powerful men like Petraeus behave this way? Edelstein’s research showed that when researchers in the lab primed partnered (i.e., not single) men to feel powerful, they had an increase in testosterone levels, and that this change in testosterone was associated with an increase in the desire for more casual sex partners. These increases in testosterone resulting from a powerful status are one biological explanation for why men like Petraeus engage in infidelity.