An application of the theory of normative social behavior to bystander intervention for sexual assault.

Given the high prevalence of sexual assault on U.S. college campuses, the current study examines predictors of college students' intentions to intervene to prevent sexual assault through the lens of the theory of normative social behavior (TNSB). One hundred eighty-six undergraduate students age 18-25 were recruited from an introductory course at a large Midwestern university. Data were collected through an online survey during the 2015-2016 academic year. Results indicated that descriptive norms, injunctive norms, and outcome expectations had direct positive effects on behavioral intention. However, no direct effect of group identity on intention was found. In addition to these main effects, an interaction between descriptive and injunctive norms was also observed. The results of the current study speak to theoretical questions surrounding the nature of TNSB variables, as well as several practical implications for coordinated efforts to promote bystander intervention on college campuses.