Measuring bystander attitudes and behavior to prevent sexual violence.

Objective: The purpose of this study is to further investigate the factor structure and strength of the Bystander Attitude Scale-Revised and Bystander Behavior Scale-Revised (BAS-R and BBS-R).

Participants: First-year students (N = 4,054) at a large public university in the Northeast completed a survey in 2010 as part of a larger longitudinal study of a sexual violence bystander education intervention program on campus.

Methods: Exploratory structural equation modeling was used to analyze survey responses to the BAS-R and BBS-R.