24. (FACTUAL-21) IF I WERE TO SELECT A SAMPLE OF 30-YEAR-OLDS, ANOTH...

1-24. (factual-21) If I were to select a sample of 30-year-olds, another sample of 40-year-olds,

and a third sample of -year-olds, test or interview them once, and then test or interview them

again 10 years later, this would be an example of what kind of research design?

a. cross-sectional

*b. sequential

c. longitudinal

d. correlational