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In an experimental study of the effects of a new drug...

This question belongs to Psychology Research Methodology And Statistics In Psychology
Research Methodology and Statistics in Psychology
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In an experimental study of the effects of a new drug on depression a double-blind control technique is used, which of the following persons should not be informed as to which drug, experimental or placebo is being administered to each individual research participant?
1. Research participants in the experimental group.
2. Research participants in the control group.
3. Persons administering the drug.
4. Persons evaluating the drug effect.
Select the correct answer:

Answer & Solution
Correct Answer: Option C
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