Questions: Question 13, 1.3.6 HWI Score: 00%, 12 of 20 Points: 0 of 1 Determine whether the following statement is true or false. If it is false, rewrite it as a true statement. A double-blind experiment is used to increase the placebo effect. Choose the correct answer below. A. The statement is false. Double blinding has no effect on the placebo effect. B. The statement is false. Double blinding is used to increase the randomization. C. The statement is false. Double blinding is used to decrease the placebo effect. D. The statement is true.

The answer is C: The statement is false. Double blinding is used to decrease the placebo effect.

Explanation for each option:

A. The statement is false. Double blinding has no effect on the placebo effect.

• This is incorrect because double blinding does have an effect on the placebo effect. It is designed to minimize it by preventing both the participants and the researchers from knowing who receives the treatment and who receives the placebo.

B. The statement is false. Double blinding is used to increase the randomization.

• This is incorrect because double blinding is not primarily used to increase randomization. Randomization is a separate process used to assign participants to different groups, while double blinding is used to prevent bias and reduce the placebo effect.

C. The statement is false. Double blinding is used to decrease the placebo effect.

• This is correct. Double blinding is used to reduce the placebo effect by ensuring that neither the participants nor the researchers know who is receiving the treatment, thus preventing their expectations from influencing the results.

D. The statement is true.

• This is incorrect because the statement is false. Double blinding is not used to increase the placebo effect; it is used to decrease it.

In summary, the correct answer is C: Double blinding is used to decrease the placebo effect.