AP Psychologyhardmcq1 pt
A double-blind procedure is used in research to:
A.Ensure random assignment
B.Eliminate the placebo effect
C.Reduce both participant and experimenter bias
D.Increase the statistical significance of results
Explanation
Core Concept
In a double-blind procedure, neither the participants nor the experimenters know who is in the experimental or control group, reducing bias from both sources.
Correct Answer
CReduce both participant and experimenter bias
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