After starting with a brief historical account of the placebo effect organized around the elaboration of clinical trials and around sham therapy as a method, we will offer a psychosocial point of view on the placebo phenomenon. The placebo effect is at the heart of medicine and particularly of thera …

Examination of the literature suggests that placebo response rates in studies of anxiolytics are influences by a number of factors, including both endogenous and exogenous variables. High placebo response rates may mask true drug response rates and may result from poor study design or lack of proced …

Over the decades of experimentation on the placebo effect, it has become clear that it is driven largely by expectation, and that strong expectations of efficacy are more likely to give rise to the experience of benefit. No wonder the placebo effect has come to resemble a self-fulfilling prophecy. H …

This paper starts by defining placebos, and describes several placebo effects observed in orthodox medicine. The authors argue that the concept of the placebo effect should not be confined to treatment and medicine alone, but should be extended to the therapeutic relationship itself. They maintain t …

The Declaration of Helsinki (DoH), adopted by the World Medical Association (WMA), is one of the most influential international documents in research ethics, is turning 50 in 2014. Its regular updates, seven versions (1975, 1983, 1989, 1996, 2000, 2008, 2013) and two notes of clarification (2002, 20 …

The data obtained from Swiss primary care providers reflect a broad variety of views about placebo interventions as well as a widespread uncertainty regarding their legitimacy. Primary care providers seem to preferentially use impure as compared to pure placebos in their daily practice. An intense d …

The use and prescription of placebo interventions seemed to be very common among Polish primary care physicians studied and they generally had positive attitudes towards their use and effectiveness.

A placebo is a substance or intervention believed to be inactive, but is administered by the healthcare professional as if it was an active medication. Unlike standard treatments, clinical use of placebo usually involves deception and is therefore ethically problematic. Our attitudes toward the clin …

In ecclesiastic tradition the term ''Placebo'' indicated the promise to please the Lord in medieval prayer. The expression ''Placebo Domino'' (''I shall please the Lord'') constituted the beginning of a famous passage of a V century A.D. translation of the Bible. It was in the second half of the XVI …

We tested the hypothesis that a suggestive placebo intervention can reduce the subjective and neurobiological stress response to psychosocial stress. Fifty-four healthy male subjects with elevated levels of trait anxiety were randomly assigned in a 4:4:1 fashion to receive either no treatment (n = 2 …