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July-August 2006
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Sidebar to "Psychiatry by Prescription" |
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One of the limitations of contemporary psychiatry is its “inflexible and outmoded” idea of scientific evidence, says Brendel. “In medicine and psychiatry today,” he says, “there’s been an over-valuation of the double-blind placebo-controlled trial, which adopts the mythology that we can observe the world independently of our own values.” Although this method is appropriate for testing the effectiveness of medications, he says, it excludes a wide range of treatments that can be extremely valuable: “Think of the absurdity of trying to design a double-blind, placebo-controlled trial for psychotherapy.” Brendel argues that psychiatry needs to adopt a wider view of evidence, one more akin to the ideas of quantum physics. “Physicists have moved beyond a mechanistic Newtonian view of the world,” he says. “They talk about chaos and uncertainty and about the effect that the observer has on what is being observed.”
Brendel believes psychiatrists need to embrace this more modern and dialectical model of science in order to overcome psychiatry’s conceptual rifts and better meet their patients’ needs. He lays out a formula for what he calls “clinical pragmatism,” which is based on four basic principles of psychiatric explanation. Psychiatrists, he argues, need to be practical (by focusing on good clinical outcomes for patients rather than on rigid application of “evidence-based” treatments), pluralistic (by considering a wide range of treatment approaches), provisional (by not taking any “evidence” too seriously because it is likely to change with further study and clinical experience), and participatory (by co-constructing treatment decisions with the patient).
Will psychiatry ever develop a definitive diagnostic test for mental disorders? Brendel calls this hope the “myth of psychiatric scientism.” The techniques of the neurosciences can never answer all the questions, he says, because clinicians will never be able to get away from the value assessments and the participatory element. “If a patient comes in and all I do is apply some rating scales and structured interviews, I’ve failed the patient,” he says. “This holds true today in 2006, and it will continue to be true in 2106.”