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EMDR and Acupuncture – Selling Non-specific Effects

The scientific approach to understanding the world includes the process of carefully separating out variables and effects. Experiments, in fact, are designed specifically to control for variables. This can be especially challenging in medicine, since the body is a complex and variable system and there are always numerous factors at play. We often characterize the many variables that can influence the outcome in a clinical study as “placebo effects” or “non-specific effect” – things other than a specific response to the treatment in question.

A common error to make when interpreting clinical studies is to confuse non-specific effects – those that result from the therapeutic interaction or the process of observation – with a specific effect from the treatment being studied. While this is broadly understood within the scientific medical community, it seems that within certain fields proponents are going out of their way to sell non-specific effects as if they were specific effects of the favored treatment.

This is perhaps most true for acupuncture. As has been discussed numerous times on SBM, the consensus of the best clinical studies on acupuncture show that there is no specific effect of sticking needles into acupuncture points. Choosing random points works just as well, as does poking the skin with toothpicks rather than penetrating the skin with a needle to elicit the alleged “de qi”.

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Posted in: Acupuncture, Clinical Trials, Neuroscience/Mental Health

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