In a study of effects of alcohol on driving ability, the control group should driving ability, the control group should be given:
Correct answer: D. no alcohol at all
- A. a high dosage of alcohol
- B. one-half the dosage given the experimental group
- C. a driving test before and after drinking alcohol.
- D. no alcohol at all
Explanation
A control group should not receive the experimental variable, so it would receive no alcohol while the experimental group receives alcohol. This allows any difference in driving ability to be attributed more confidently to alcohol.
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