Dr Barry Beyerstein, noted scientific skeptic and professor of psychology, wrote in Skeptical Inquirer that subtle forces may lead intelligent people to think that a treatment has worked. He listed seven reasons why people inflate the value of bogus treatments.
3. The power of the placebo effect.
The belief that we are taking treatment which can cure an illness, causes powerful forces to effect an improvement through mind-body connections. This is called the “placebo effect”.