Multiple Choice
Phillipe, a researcher, examined the effect of lighting on learning. Randomly assigned participants learned material while using a 100-watt or a 125-watt bulb. He found no differences between the two groups. The nonsignificant results may have occurred because of _____.
A) a costly measure of learning
B) insufficient strength of the manipulation
C) selection differences
D) the use of staged manipulation
Correct Answer:
Verified
Correct Answer:
Verified
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