as i understand it, there has been forming for some time a rift between the two terms. while ASPD was originally coined as a more politically correct name for "sociopath" it has come to represent a personality disorder (in other words a set of learned, however dysfunctional traits... traits which could supposedly be unlearned if one were willing to participate) whereas according to myers' perspective (as i understand it, please correct me if i'm wrong) psycho/sociopathy is a brain damage issue.