Most people have three varying images of psychology. One is of a scientist poring over notes derived from a patient — the Robin Williams-in-"Awakenings" brain specialist. The second is of a patient, lying on a divan, telling a psychologist stories about her parents' unstable marriage — the therapist. The third is of a patient and her psychologist in flagrante delicto.

The truth is somewhere between the first and second images. Psychology is a field that is part science, part hand-holding and lots of speculation. The truth is that we know very little about the inner workings of the mind, and even less about abnormalities of the mind.

That inherent vagary is troubling because politics tends to fill the gap where scientific knowledge is thin. Take, for example, the latest edits to the Diagnostic and Statistical of Mental Disorders (DSM). Every couple decades, the psychology establishment rewrites this basic diagnostic textbook for the field, which is analogous to a "Gray's Anatomy" for the mind. And every couple decades, political correctness ensures that true science of the mind is obscured in favor of liberal niceties.

For more, read here.