This study assesses how men’s friend groups may reduce men’s sexual violence perpetration. It found men who are active in more social groups were less likely to be sexually violent, and if they do, they commit fewer acts then men with fewer social groups.

Kaczkowski, W., Brennan, C. L., & Swartout, K. M. (2017). In good company: Social network diversity may protect men against perpetrating sexual violence. Psychology of violence, 7(2), 276.