I was under the impression "placebo" includes the effects of: - the extra exercise of going to the medical center - better behavior under monitoring - talkin

I was under the impression "placebo" includes the effects of: - the extra exercise of going to the medical center - better behavior under monitoring - talking to the test administrators (important for e.g. depression) - better organization to follow the intake schedule Which are not affected by knowing you are in the control group. Is this really a surprise to the medical community, or is the article just going for the "mind over matter" and general woo line? Also: open a door toward ethical use of placebos in daily medical practice Haven't this been extensively discussed and ultimately rejected for a long time?