I'm not quite sure what's achieved by arguing that "there was never a unified, concerted effort within American psychiatry to promote a 'chemical imbalance theory' of mental illness in general", if that's the impression that's been created in Laura Delano and the public in general. Whose fault was it then? Certainly patients are given this professional opinion by psychiatrists (whether they really believe it or not) (see previous post). As I said in my review, Pies thinks that:-
Doctors know it’s an oversimplification ... but use it so patients don’t feel so blameworthy. He does agree this is “a little lazy” ... on the doctors’ part and doesn’t excuse their behavior, but says they are very pressed for time with so many patients to see.
I also agree with Pies that most psychiatrists are more eclectic than just biological (eg. see previous post). In fact, Pies is quite biological in his approach to psychiatry and admits for example that he's enamoured of the idea that depression is a form of inflammation, even though I think this hypothesis is nonsense (eg. see last post). I think Pies is just trying to say that psychiatrists are not simplistic in their biological (which doesn't omit psychosocial aspects) theories of mental illness. That's as may be and it's good he admits the chemical imbalance theory is bogus. But, if he doesn't attribute the chemical imbalance theory to psychiatrists, who take a much more complex view about the nature of mental illness, then who's been responsible for its promotion? Surely he doesn't think it's the silly patients who’ve believed it.