Which of the following best describes a double-bind experimental procedure?
Correct answer: C. Half the subjects get the experimental procedure, half the placebo; which they receive is not know to subjects or experimenters
- A. All subject get the experimental procedure
- B. Half the subjects get the experimental procedure, half the placebo; which they receive is know only to the experimenter
- C. Half the subjects get the experimental procedure, half the placebo; which they receive is not know to subjects or experimenters
- D. all subjects get control
Explanation
In a double-blind procedure, neither the participants nor the researchers who interact with them know who receives the experimental treatment or placebo. This reduces both participant expectancy effects and researcher bias.
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