On criminal activity in general:
Psychopathy affects 20% to 30% of the prison population in the US.
Half of the prisoners in the US were convinced for violent crimes.
http://news.uchicago.edu/article/20...are-not-neurally-equipped-have-concern-others
http://www.bjs.gov/index.cfm?ty=pbdetail&iid=1118
On sexual aggression:
Perpetrators of sexual aggression consistently report higher scores on measures of psychopathy and acceptance of rape myths relative to nonperpetrators.
Rape myth acceptance was positively correlated with psychopathy, and perpetrators scored higher on both constructs. Myths transferring responsibility to victims were related to Factor 1 psychopathy (i.e., callous and manipulative traits).
http://www.tandfonline.com/doi/abs/10.1080/10926771.2013.743937#.VMqLi9LkfDU
Little to no bearing you say?
You convince the investigator/judge you are innocent.
Regarding my reply to Tefal's post, I said it's not surprising that men and women are treated differently, considering that most criminals, particularly violent ones, are men.
Besides, we're not talking about an individual here, we're talking about populations - namely, that men and women engage in different types of criminal activity and for different reasons. These differences mean that the rehabilitation methods should be different as well.
In general, the Biosocial Study confirmed past proposals suggesting that biological factors have relatively more impact among females, and environmental factors have relatively more impact among males.
For males, the number of adult offenses is most strongly influenced by
four factors: (1) mother's low and father's high educational levels; (2) lead
intoxication; (3) amount of time the father was unemployed; and (4) the
number of household moves.
For females, the number of adult offenses is most strongly influenced by five
factors: (1) father's low educational level; (2) lower number of neurological
abnormalities; (3) lack of foster parents; (4) number of abnormal movements;
and (5) abnormal vision.
http://ir.lawnet.fordham.edu/cgi/viewcontent.cgi?article=1122&context=faculty_scholarship
For the rehabilitation of females the focus should be on biological factors (healthcare), for males it should be on environmental factors (social protection).