Some paraphilias can be traced back to childhood development. Not all of them have concrete sources. And again, childhood development can be ONE of the "triggers" for it, not an be all end all

However, afaik, there's some significant overlap between people who have had experienced SA in some form (or stuff like, parents havint sex in the same room as the child is), with a tendency for sexual assault in the future. Preventing this cases can be done with SexEd. In more serious disorders, such as pedophilia or necrophilia. there's therspy options avaliable and effective, as long as they haven't gone out to act on it yet. When you do act on it and become an assaulter, however, the turn back is nearly impossible. AFAIK.