Asked by Kristen Marie on Jul 12, 2024

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​An investigator measures blood pressure in a group of college students and then repeats these measurements every year for 20 years. This is an example of

A) ​a longitudinal study.
B) ​a cross-sectional study.
C) ​an experimental study.
D) ​a clinical trial.

Longitudinal Study

A research design that involves repeated observations of the same variables over short or long periods of time to detect patterns, trends, or changes.

  • Mastery of multiple research designs like correlational, experimental, ex post facto, cross-sectional, and longitudinal studies, and their specific characteristics.
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Sarmistha GhoshJul 17, 2024
Final Answer :
A
Explanation :
This is an example of a longitudinal study as the investigator is following the same group of individuals over a period of 20 years to observe changes in their blood pressure.