If you ask in general, why social science has been in so selective in its use of Freud, and so one-sided in its interpretation, the answer seems to be, that since the nineteen twenties and up until very recently, Western social science has been primarily dominated by what I would call, cultural determinism, and by that I mean, a school of thought which believes that, to use a term borrowed from one of its founding fathers, Emile Durkheim, social facts have social causes.