Why do the researchers mention that the volunteers were young adults?
Researchers asked two groups of students to learn a list of forty word pairs in the evening. One group slept for eight hours and was tested the next morning; the other group stayed awake through the night and was tested at the same time. The group that slept recalled noticeably more pairs. The researchers do not claim that sleep is the only factor that matters. They note that the volunteers were young adults, and the results may not apply to children or older people. Still, the finding supports an idea many teachers have suggested for years: a night of sleep after studying may be more useful than extra hours of late study.
Answer and explanation
Correct answer: C. The results may not apply to other age groups.
Answer: may not apply to other ages. Why not the others: The passage makes no claim about sleep length, speed or rules.
- Step 1: The sentence is part of their caution about the findings.
- Step 2: They warn the result may not apply to children or older people.
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