Many organizations have made efforts to use gender-neutral terms when referring to perpetration and victimization. PASK found parity in rates of both perpetration and victimisation for men and women. It is also associated with perpetration of violence and being a victim of violence. It is estimated that some 200,000 people participated in the perpetration of the Rwandan genocide. Women also often link the perpetration of physical violence with husbands who are very controlling. Empirical studies suggest rates of perpetration remain symmetrical for both minor and severe abuse. Boredom led to in-fighting among the soldiers and the perpetration of some abuses. These items were adapted from the Abuse and Perpetration Inventory (API).