Cross-sectional study problems A researcher conducting a cross-sectional study on age differences in health habits wants to look at people in their 20s vs.people in their 70s.This research might be improved by which of the following steps?

Question

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Including a middle-aged group would reduce the age span being compared, making the study more focused and specific. Limiting the young adult group to college students may introduce bias because not all young adults attend college. Examining older adults in a computer lab may not accurately represent their daily health habits, and paying college students but not older adults for participating may introduce bias.

Cross-Sectional Study Problems a Researcher Conducting a Cross-Sectional Study on Age