It's difficult to believe that there are many sets of identical twins out there where one was abused and the other treated well or whatever. Were these identic

It's difficult to believe that there are many sets of identical twins out there where one was abused and the other treated well or whatever. Were these identicals raised apart, or together? Are there enough of each to see a difference in rates between those raised together and apart? Whatever the triggers are, I can't help but think that they're subtle and unmemorable.