Which of the following would you consider to be an example of repeated-measures design?
A. 6 participants are given analgesia and 6 a placebo; effects of pain relief after 4 hours is recorded.
B. 12 participants are given analgesia, 6 are asked to record pain level after 2 hours and the remaining 6 participants after 4 hours.
C. 12 participants are asked to record pain level after 4 hours then given analgesia.
D. None of the above.
Answer: B
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