16Hit1600
Expression of IdeasVery hardPresenting a study's finding with its limitation

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - A study followed 200 people who took up gardening. - After a year, they reported feeling less stressed. - The study had no comparison group of people who did not garden. - Stress was measured by self-report. The student wants to report the finding while noting why it cannot show that gardening reduces stress.

Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. People who took up gardening reported less stress after a year, but with no comparison group and only self-reported stress, the study cannot show that the gardening was the cause.Correct
  2. B. People who took up gardening reported less stress after a year.
  3. C. The study had no comparison group.
  4. D. The study followed 200 people.

Answer: A. People who took up gardening reported less stress after a year, but with no comparison group and only self-reported stress, the study cannot show that the gardening was the cause.

Finding, then the two weaknesses.

Why the other answers are wrong

B. People who took up gardening reported less stress after a year.
No caveat.
C. The study had no comparison group.
A caveat without the finding.
D. The study followed 200 people.
Method only.

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