Multiple Choice
An experimenter studies the relationship between caffeine and reaction time.She designs her experiment with four groups.Group one receives 100 mg of caffeine each in their cups of coffee; group two receives 200 mg of caffeine each in their cups of coffee; group three receives 300 mg of caffeine each in their cups of coffee; and group four receives no coffee.Twenty minutes later, participants from all the groups are given a reaction-time test.In this experiment, which group is the control group?
A) group four
B) group three
C) group two
D) group one
Correct Answer:
Verified
Correct Answer:
Verified
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