In an experiment with depressed patients,doctors gave some participants antidepressant pills while others received an identical pill with no active ingredients.Neither doctors nor patients knew who got what.If both groups improved substantially but equally,this is strong evidence that
A) the "active ingredient" has no effect.
B) any effect of the antidepressant pill is due to patients' expectations.
C) of the need for placebo controls in drug research.
D) all of the above

Question

Quizplus · Accepted Answer

The scenario describes a double-blind placebo-controlled experiment. If both groups improved equally, it suggests that the active ingredient may not have a specific effect beyond the placebo effect, highlighting the importance of placebo controls in research.

In an Experiment with Depressed Patients,doctors Gave Some Participants Antidepressant