Of interest is the question of believing that a child molester will stop because he said he did teshuva or that he claims he really is sorry it won't happen again. Apparently most studies assume that molesters are liars or incapable of controlling themselves. Are Jewish molesters different or are promises made to the rabbical authorites more likely to be kept?
Update: I came across an interresting Meiri that insists that the victim needs to forgive him before we can assume he has done teshuva.
Meiri (Berachos 19a): Concerning a talmid chachom one is not allowed to suspected him of sinning even if you saw him sin at night it is prohibited to suspect that he will continue sinning in the day. Rather one is required to assume that he has repented from sinning by the day. When do we make this assumption of repentance? It is only for sins between him and G-d but for those sins against other men you can assume he will continue sinning until it is known that the one he has sinned against has forgiven him