The healing efficacy of placebos has risen exponentially in the past three decades. In the 1980s, the placebo effect (or response) was almost zero. Now, it accounts for more than 70 percent of an effect in a medical trial.
The healing efficacy of placebos has risen exponentially in the past three decades. In the 1980s, the placebo effect (or response) was almost zero. Now, it accounts for more than 70 percent of an effect in a medical trial.