Question:
A researcher claims that eating breakfast improves concentration in schoolchildren. Which of the following, if true, would most strengthen this claim?
A researcher claims that eating breakfast improves concentration in schoolchildren. Which of the following, if true, would most strengthen this claim?
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Think about what kind of evidence, correlational or a proper controlled comparison, actually proves cause and effect for a group like schoolchildren.
Updated On: Jul 8, 2026
- Many children say that they enjoy eating breakfast in the morning.
- Breakfast foods are widely available in most shops and homes.
- Some adults report feeling more alert after eating breakfast.
- In a controlled trial, children given breakfast scored higher on concentration tests than a similar group who skipped breakfast.
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
A controlled trial comparing children who ate breakfast with a similar group who did not, where the breakfast group scored higher on concentration tests, directly supports the causal claim. Enjoying breakfast, its availability, and adult alertness do not establish that breakfast improves children's concentration. The correct option is 'In a controlled trial, children given breakfast scored higher on concentration tests than a similar group who skipped breakfast.'
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