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Vassnti See, I am not saying the crime is different but the reason behind these crimes and its nature will vary in every case.
In cities, sexual harassment is something many offices have. One can trace it back to seniority of a man over a woman starting taking her as a woman he can control. He may flirt or indulge in harassment especially when the woman doesn't reciprocate his advances. But this is an environment built over the period of time that will push that bank officer to rape his employee. The individual' personality, characteristics, mental state along with the social environment, all are taken into context to understand a crime.
Similarly a brahmin raping a dalit based on caste can be analogous to a White man who consider himself from superior race may rape a woman of inferior race according to him. So just like I said in case of caste, a child grows up in an environment where even the women from his race look down upon woman of other race. Behavior of men from superior race towards other women will also affect the psyche of the child.
Let me cite an example in case of racial hatred. Even Germans were persecuting Jews, the children saw their parents indulged in racial oppression, hate speech, labeling of Jews etc. and they were also exposed to media and the entire society following the same. So even the children started hating Jews. They follow and behave in the same way they see their elders.
Now, the psychology of a person turning into rapist. What you have cited is classic case of serial rapists and even serial killers being researched in US especially. One of the serial rapists used to see her mother being indulged with many men right next room, saw her having intercourse and also she used to lock him up in the closet and beat often. many children who are abused sexually generally become insensitive towards sex and mimic the same behavior of the molester who used them.
In case of the child you talked about who is strictly controlled by his mother, beaten up and abused with a father figure who didn't take care of him, he might snap in case of rejection for women, failed relationship (which is high in these cases) or cheating by his companion, and he will take his anger towards womanhood or his mother and past woman he had, on the surrogates.
In case of BTK killer, he didn't even rape women, he even hanged a 12 year old girl and semen was found near her. It excited him. Similarly, Ted Bundy was too much involved in sexual intercourse and masturbation and it affected him to the extent that he lost control and pick women to rape them. He even revisited the site and often have intercourse with dead woman, Necrophilia is the term. Same was the case with Green River killer.
I don't accept the fact that children who sleep with their siblings or mother will develop sexual tendencies as a factor that applies everywhere. It may happen in certain regions, but may be completely absent or quite low. It depends on society and the exposure to the fact that they saw news about mother-son, sister-brother relationship which is weird for them but adolescent may not understand this change. Now this notion will be out rightly rejected by many people because in their society they didn't see or heard of such cases and they can't accept it, and even if they witness they will take it as an isolated, unique case which occurs one in a million. Whereas those who have read about criminal psychology and the research you have cited, they have taken into account various such cases and they have come to this conclusion by detailed research.
So, every region has its own factors that influence the child to grow and turn out as a rapist. Also psychopaths, sociopaths etc. can be spotted earlier and their parents can take of their mental condition.
According to research, genetics, family environment, social environment (violent surroundings, racial discrimination, cast system, ultra conservatism, inequality among gender,) media etc. all play a major role in creating a rapist.
Ted Bundy, serial rapist and killer said, "We are your sons, your husbands and we are everywhere".
Problem with many communities is that they are reactive towards crime instead of understanding the origins of crime. Unless and until one doesn't observe the social dynamics, psychology of individual and community, etc. he/she won't be able to reduce the crime.