It's not conjecture, it's research.
The reasons college women may decide not to report assaults include embarrassment or fear it will happen again. Also, while research and statistics tend to focus on victims who are women, victims who are men also
report sexual assault at lower rates — potentially due to shame, humiliation, or the stigma surrounding men being vulnerable.
Furthermore, in a majority of cases, the perpetrator is either a family member, acquaintance, or someone the victim knows. Statistically, 19.5% of rape cases are committed by a stranger. If a survivor knows the person who assaulted them, they may decide not to report the act of violence for many reasons, such as fearing for their safety or worrying about reprisals from their social circle.
https://www.bestcolleges.com/resourc...ult-on-campus/