Randall and His Colleague Are Designing a Study to Assess

Randall and his colleague are designing a study to assess how self-esteem changes as we age.His colleague really wants to use a longitudinal design,but Randall feels that a cross-sectional design would be better.Randall begins presenting a case with all the reasons that the longitudinal design is bad.Which of the following would he NOT say?

A) It takes a long time and a lot of money/resources.
B) It doesn't control for cohort effects.
C) It doesn't explain age change.
D) Many participants drop out over the course of the study.

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