Multiple Choice
In a study on the effects of caffeine on memory, Dr. Levine asked participants to drink a bottle of unflavored water containing 100, 50, or 0 milligrams of caffeine. Neither Dr. Levine nor the study participants knew whether the water contained caffeine or not. This is an example of a _____ study.
A) correlational
B) case
C) single-blind
D) double-blind
Correct Answer:
Verified
Correct Answer:
Verified
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