Multiple Choice
A researcher measures the cognitive skills of five children in each of the following age groups: 2-5 years, 8-12 years, and 14-16 years. He measures their cognitive skills several times across a span of 10 years. This is an example of a
A) cross-sectional study.
B) longitudinal study.
C) sequential study.
D) correlational study.
Correct Answer:
Verified
Correct Answer:
Verified
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