Expression of IdeasHardPointing out a confound in a study
Expression of Ideas practice question
While researching a topic, a student has taken the following notes:
- A study followed 400 commuters.
- Those who cycled to work reported better mood than those who drove.
- The cyclists were on average eight years younger than the drivers.
- The study did not adjust for age.
The student wants to point out a weakness in concluding that cycling improves mood.
Which choice most effectively uses relevant information from the notes to accomplish this goal?
- A. Because the cyclists were on average eight years younger and the study did not adjust for age, the cyclists' better mood cannot simply be attributed to cycling.Correct
- B. Cyclists reported better mood than drivers.
- C. The study followed 400 commuters.
- D. Cycling to work improves mood.
Answer: A. Because the cyclists were on average eight years younger and the study did not adjust for age, the cyclists' better mood cannot simply be attributed to cycling.
Age as an alternative explanation.
Why the other answers are wrong
- B. Cyclists reported better mood than drivers.
- The finding, no weakness.
- C. The study followed 400 commuters.
- Sample size only.
- D. Cycling to work improves mood.
- Overstates the finding.
More Expression of Ideas questions
- Hard
The student wants to emphasize the axolotl's regenerative ability. Which choice best uses the notes to accompl… - Hard
The student wants to emphasize that bioluminescence serves a variety of purposes across different organisms. W… - Hard
Which choice completes the text with the most logical transition? - Hard
Which choice completes the text with the most logical transition? - Hard
Which choice completes the text with the most logical transition? - Hard
The student wants to emphasize the tardigrade's extraordinary ability to survive extreme conditions. Which cho…
Not affiliated with the College Board. SAT is a trademark of the College Board.