Victimhood is a learned behavior

Typically, a child will learn not to need others to soothe themselves, but people with high TIV can't soothe themselves. That is why they often dwell on perceived offences over an extended period.

People who score high on TIV don't need to have been victimized or physically abused to show TIV, but they often have experienced some trauma, like PTSD, that they didn't fully recover from.