What substance should be administered to the control group in an investigation examining the effects of alcohol on driving performance?
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Answer: D. no alcohol at all
Explanation
Experimental research requires a control group that receives no active treatment or substance. Administering no alcohol to the control group establishes a reliable baseline for comparison. This prevents confounding variables from interfering with the measurement of alcohol's impact. Controlled experiments are the gold standard for establishing cause-and-effect relationships. Random assignment ensures that experimental and control groups are comparable before testing. Placebo controls are often used in drug trials, but outright zero dosage serves baseline needs here.
Research ethics and safety guidelines strictly govern studies involving alcohol impairment testing. Public safety studies rely on such rigorous experimental designs to inform drunk driving laws. Understanding methodology helps students evaluate the validity of scientific claims in media reports. Option A is incorrect because a high dosage would be given to the experimental group instead. Option B is wrong because a half-dose creates a second treatment group rather than a true control. Option C describes a testing procedure rather than the substance administered to the control group.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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