"The word “disorder” occurs so many times that it almost detaches itself from any real signification, so that the implied existence of an ordered state against which a disorder can be measured nearly vanishes is almost forgotten. .... Here all pretensions to objectivity fall apart and the novel’s carefully warped imitation of scientific categories fades into an examination of petty viciousness."

Or as Richard Feynman coined it: Cargo Cult Science http://en.wikipedia.org/wiki/Cargo_cult_science

Also lets not forget these same people claimed being homosexual was a mental disorder until 1973!