In drug research,a(n)_____ has occurred when it is unclear whether improvement is due to properties of the drug or the expectation about the effect of the drug.
A) order effect
B) placebo effect
C) ceiling effect
D) demand characteristic

Question

Quizplus · Accepted Answer

The placebo effect refers to improvement or a perceived improvement in a condition or symptoms due to an inactive or inert substance, such as a sugar pill, that the participant believes is an active drug. In drug research, it can be difficult to determine whether observed improvement is due to the actual properties of the drug or to the placebo effect.

In Drug Research,a(n)_____ Has Occurred When It Is Unclear Whether