The effects of a drug may vary between users because of the users' expectations.

Question

Quizplus · Accepted Answer

The placebo effect is a well-documented phenomenon where a person experiences some positive effects simply because they believe a treatment will work. This applies to drugs as well. If a person takes a drug with the expectation that it will have a certain effect, they may experience that effect to a greater degree than someone who has no expectations about the drug's effects. Therefore, users' expectations can influence the perceived effects of a drug.

The Effects of a Drug May Vary Between Users Because