Objective: Most sexual assault prevention approaches are universal in nature. The present study evaluated a Transtheoretical Model (TTM)--based Stages of Change (SOC) measure assessing readiness to utilize sexual assault risk reduction skills. The measure was evaluated with regard to Decisional Balance and Self-Efficacy. Participants: Survey data were collected from 300 college women (M[subscript age]=18.5, SD = 0.79). Methods: Three SOC measures were developed and evaluated for using: (1) assertive responding; (2) self-protective dating behaviors; and (3) open sexual communication. Item development was followed by exploratory, confirmatory, and external validation analyses. Results: Exploratory Factor Analysis (EFA) indicated two, six-item factors (Positive Outcomes [alpha]=0.91; Negative Outcomes [alpha]=0.85) for Decisional Balance. Confirmatory Factor Analyses (CFA) supported a two-factor correlated model, X[superscript 2](66)=2101.70, p<0.001, CFI=0.946, RMSEA=0.083. For Self-Efficacy, EFA indicated one, six-item factor ([alpha]=0.81). Conclusions: These readiness assessments may guide understanding of factors influencing sexual assault risk reduction program outcomes and aid in tailoring program content.