Multiple Choice
A researcher wants to assess the effect of sleep on test performance. She brings students into the lab, gives each student an IQ test, and then asks them how much they slept last night. This would NOT be an experiment because
A) IQ was measured first
B) sleep was measured second
C) sleep and IQ were measured at the same time
D) no variable was manipulated
Correct Answer:
Verified
Correct Answer:
Verified
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