Many thanks to Say Uncle for the pointer.
Overview for the laymen is here.
More porn means less rape. Porn is implied. The actual variable is Internet access.
Previous studies measured aggression in the laboratory but not what happens in the real world. These researchers seem to have found ways to get the data from the real world. Bravo for them. I’m skeptical but only because it’s what I want to believe. It reduces the justification for interference with the free market. Let’s see if other researchers can duplicate and/or confirm their work. I’ll be doing my part–especially with the porn.