All scientists should be skeptics. Serious problems arise when a less-than-skeptical approach is taking to the task of discovery. Typically the result is flawed science, and for those significantly lacking in skepticism this can descend to pseudoscience and crankery. With the applied sciences, such as the clinical sciences of medicine and mental therapy, there are potentially immediate and practical implications as well.
Clinical decision making is not easy, and is subject to a wide range of fallacies and cognitive pitfalls. Clinicians can make the kinds of mental errors that we all make in our everyday lives, but with serious implications to the health of their patients. It is therefore especially important for clinicians to understand these pitfalls and avoid them – in other words, to be skeptics.
It is best to understand the clinical interaction as an investigation, at least in part. When evaluating a new patient, for example, there is a standard format to the “history of present illness,” past medical history, and the exam. But within this format the clinician is engaged in a scientific investigation, of sorts. Right from the beginning, when their patient tells them what problem they are having, they should be generating hypotheses. Most of the history taking will actually be geared toward testing those diagnostic hypotheses.
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