“To screen out those considered to have “excessive placebo responses,” many randomized, double-blinded, placebo-controlled trials of drugs are actually preceded by a “washout phase,” in which all participants take an inert pill and anyone who reacts favorably to it is eliminated from the study.”

“To screen out those considered to have “excessive placebo responses,” many randomized, double-blinded, placebo-controlled trials of drugs are actually preceded by a “washout phase,” in which all participants take an inert pill and anyone who reacts favorably to it is eliminated from the study.”

— Lissa Rankin