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A Researcher Collects Data on 50-Year-Olds and Follows Them for 20

Question 60

Multiple Choice

A researcher collects data on 50-year-olds and follows them for 20 years to see if they responded the same or differently when they were 50, 60, and 70 years old. This researcher is employing a ________ experimental design.


A) cross-sectional
B) longitudinal
C) sequential
D) gradual

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