We all know the opposite sex can be a baffling, even infuriating, species. Why do most men use the phone to exchange information rather than have a chat? Why do women love talking about relationships and feelings with their girlfriend...

orderline personality disorder, autism, narcissism, psychosis, Asperger's: All of these syndromes have one thing in common--lack of empathy. In some cases, this absence can be dangerous, but in others it can simply mean a different wa...