The current research investigated the effects of competition on empathy and prosociality in two studies. Study 1 aimed to explore associations between competition and prosociality by asking participants to play a computer puzzle game that was either high or low on competitiveness, and then to complete measures of empathy, perspective taking, compassionate love and willingness to sacrifice for a romantic partner. Study 1 found a marginally significant difference across conditions for perspective taking, a marginally significant gender interaction for perspective taking, and a significant gender by condition interaction for compassionate love, in support of hypotheses that competition reduces prosocial responses in men. Study 2 addressed methodological limitations from Study 1 and examined the effect across a broader range of relationship contexts, including close friends. Results for Study 2 did not replicate the marginally significant effect for perspective taking seen in Study 1, but found a significant interaction between gender and condition predicting perspective taking. Significant findings in line with prior research emerged for dominance and commitment, indicating that higher dominance and lower commitment were associated with less empathy and prosociality. Overall, results do not consistently support the hypothesized effect of competitive situations on prosocial and empathic behavior, although results of exploratory analyses suggest potential moderated or conditional effects. / Includes bibliography. / Thesis (M.A.)--Florida Atlantic University, 2017. / FAU Electronic Theses and Dissertations Collection