Multiple choice

In a study of effects of alcohol on driving ability, the control group should be given

  1. a high dosage of alcohol

  2. one-half of the dosage given to the experimental group

  3. a driving test before and after drinking alcohol

  4. no alcohol at all
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A control group receives no experimental treatment, allowing researchers to compare the effects of alcohol against a baseline. The control group drives sober, while experimental groups receive varying alcohol doses. This design isolates alcohol as the causal variable affecting driving performance.

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