Trick or treatment

March 24, 2010 at 11:09 am Leave a comment

Dr. Harriet Hall has a fascinating article on the placebo effect over at eSkeptic:

We not only know placebos “work,” we know there is a hierarchy of effectiveness:

  • Placebo surgery works better than placebo injections
  • Placebo injections work better than placebo pills
  • Sham acupuncture treatment works better than a placebo pill
  • Capsules work better than tablets
  • Big pills work better than small
  • The more doses a day, the better
  • The more expensive, the better
  • The color of the pill makes a difference
  • Telling the patient, “This will relieve your pain” works better than saying “This might help.”

Dr. Hall also discusses four factors that explain how the placebo effect works — expectancy, motivation, conditioning, and endogenous opiates. Also in the article, a section on whether animals respond to placebos, and a summary of the ethics of the matter.

In this great video, Dr. Ben Goldacre, author of Bad Science, explains the role of the placebo effect in medical research.

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Jason R. Atwood

I'm an avid trail runner and doctoral student at U.C. Berkeley who studies motivation and the relationship between the mind and body. This blog is a forum to share research, news, and musings about these topics of interest. More

Play is the beginning of knowledge.

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