Multiple Choice
Dr. Jones was testing the effectiveness of a new vitamin supplement. Half of the participants received the vitamin and half received a sugar pill. He found that the sugar pill worked as well and sometimes better than the vitamin. This could reflect
A) an experimenter bias
B) a placebo effect
C) demand characteristics
D) a replication bias
E) an order effect
Correct Answer:
Verified
Correct Answer:
Verified
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