The experimental procedure in which both the experimenter and subject are unaware of who is in the experimental and who is in the control group is referred to as the:
Correct answer: D. double-blind procedure
- A. single-blind procedure
- B. the type of experiment is not possible
- C. stereotaxic procedure
- D. double-blind procedure
Explanation
In a double-blind procedure, neither the participants nor the researchers who interact with them know who receives the experimental treatment or control condition. This reduces expectancy effects from both sides.
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