Indiana University-Purdue University Indianapolis (IUPUI) / This study examined the roles of commitment and attributions in uninvolved partner responses to imagined sexual infidelity. Undergraduate students (N = 298) in dating relationships participated in a hypothetical sexual infidelity scenario in which they imagined their romantic partner engaged in sexual intercourse with someone else. Measured-variable path analysis was used to evaluate the predictive ability of commitment and attributions on negative emotional responses and predicted relationship continuation. The hypothesized conceptual model demonstrated poor fit to sample data. Through exploratory model building, an alternative model was generated that demonstrated good fit to sample data. A subset of commitment, investment, predicted negative affect. In addition, attributions predicted predictions of relationship continuation. Negative emotional responses were highly endorsed on a validated measure for emotional responses, the PANAS-X (Watson & Clark, 1994). Further, study findings highlight the importance of the use of a compliance check in assessing successful participant completion of imagined infidelity scenario. Unique study contributions include directions for further conceptual model development for this area of research as well as support for the use of compliance checks and careful selection of infidelity scenario.