To control for this bias in drug studies, participants are kept blind as to whether they are receiving the active drug or placebo:
A) personal
B) observer
C) expectancy
D) placebo
E) confounding

Question

Quizplus · Accepted Answer

Expectancy bias occurs when participants' expectations influence their behavior or perceptions, so keeping them blind to whether they receive the active drug or placebo helps control for this bias.

To Control for This Bias in Drug Studies, Participants Are