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AP Research/Unit 2 – Understand and Analyze
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Validity in Longitudinal and Cross-Sectional Research
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When comparing the reliability of results from a longitudinal study and a cross-sectional study on adolescent behavior, which factor is most significant in determining the validity of the findings?

A

The number of researchers involved in conducting each study.

B

The statistical software used to analyze data in both types of studies.

C

The geographical location where both studies were conducted.

D

Sample representativeness over time for longitudinal and at one point for cross-sectional.

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