Abstract

The placebo effect, in recent years, has been the focus of extensive scientific inquiry and public fascination, as reflected in articles in the news media. Authors writing about placebo effects often mention the goal of harnessing the placebo effect for the benefit of patients in clinical practice. This suggests that the placebo effect is like a powerful horse, which needs to be put in harness in order to do useful work. However, developing an accurate understanding of what has been labelled, often misleadingly, as the "placebo effect" and taking advantage of this phenomenon have been hampered by the conceptual muddle surrounding this topic. To continue the equine metaphor...