The focus of the current study was to determine if SIP biases and perspective-taking serve as mediators between parental intimate partner violence (IPV), aggression, and interpersonal dominance in emerging adults' romantic relationships. We analyzed archival data comprised of self-report measures and TAT stories administered to 84 undergraduate students (women n = 62, M age = 21.73) between the ages 18 and 35. To test our hypotheses, we modified the social information processing model by incorporating perspective-taking, as measured through Interpersonal Decentering. Overall, we did not find significant association between witnessing parental IPV and Interpersonal Decentering maturity in college students. However, women's father-to-mother IPV was significantly negatively associated with Interpersonal Decentering maturity. For our mediation model, SIP aggressive responding biases were significantly associated with Interpersonal Decentering (average of story average scores) and with the presence of aggression in current romantic relationships; however, Interpersonal Decentering was not significantly predictive of aggression in current romantic relationships. Gender differences, study strengths and limitations, and future research directions are discussed.