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

Multiple Choice

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?

A) Limit the young adult group to college students to minimize bias.
B) Examine the older adults in a computer lab to control test conditions.
C) Pay the college students but not the older adults for participating.
D) Include a middle-aged group to reduce the age span being compared.