Recently I have done a number of consultations involving the issue of having an abusive twin. Of course, this type of situation is not uncommon among nontwin siblings. However, it does not fit the stereotypical notion that twins are best friends forever. Nevertheless, on closer examination, it is not difficult to discern how certain twin dynamics can lead to this behavioral paradigm. Twins are exquisitely sensitive to each other's feelings and needs. To keep their connection stable, one twin may [...]