When the development of the same subject is studied over a period of time, the study is called a _______________?
Correct answer: B. longitudinal study
- A. cross-sectional study
- B. longitudinal study
- C. life-history study
- D. sequential study
Explanation
A longitudinal study follows the same individuals or subject group across an extended period, allowing researchers to observe change over time. A cross-sectional study compares different age groups at one point in time.
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