I personally have only ever been fascinated by behavioural sciences mostly attributed to other anthropological and biological studies. The DSM-IV (and whatever else is available these days) has generally made me very uncomfortable in light of my views about human behaviour. The general consensus that "it is unknown if genes or environment play a role, and doesn't matter, because generally hard-core mindf*ck and administered chemical combinations should correct it" has always put me on edge.
In “Shyness: How Normal Behavior Became a Sickness”, Northwestern's Christopher Lane chronicles the “highly unscientific and often arbitrary way” in which widespread revisions were made to “The Diagnostic and Statistical Manual of Mental Disorders” (DSM), a publication known as the bible of psychiatry that is consulted daily by insurance companies, courts, prisons and schools as well as by physicians and mental health workers.
Full article here. Apologies if it's been posted already, I tried to peek around a bit.