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 evidence that
A) the "active ingredient" has no effect.
B) any effect of the antidepressant pill may be due to patients' expectations.
C) any effect of the antidepressant pill may be due to the allegiance effect.
D) all but c

Question

Quizplus · Accepted Answer

The improvement in both groups suggests that the effect may be due to patients' expectations (placebo effect), indicating that the active ingredient might not have a specific effect beyond this. The allegiance effect is not relevant here.

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