The purpose of a single-blind or double-blind study is to:
A)compare people blind in one eye with people blind in both eyes.
B)eliminate the effects of expectations on the results of an experiment.
C)examine the effects of the independent variable on the experimental group.
D)examine the difference between the experimental and control groups.

Question

Quizplus · Accepted Answer

The purpose of a single-blind or double-blind study is to eliminate the effects of expectations on the results of an experiment. In a single-blind study, the participants do not know whether they are receiving the treatment or the placebo, while in a double-blind study, neither the participants nor the researchers administering the treatments know which is the treatment and which is the placebo. This helps to prevent bias in the results and ensure that any differences between the experimental and control groups are due to the independent variable being tested.

The Purpose of a Single-Blind or Double-Blind Study Is To