If you wanted to study changes within a group of individuals, you would use a longitudinal study . Measuring that group over time would be an example of prospective research.

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The statement set presents two ideas about studying changes over time in a group of individuals.
Option 1: 'longitudinal study' — This is correct because a longitudinal study is specifically designed to observe the same group of individuals across multiple time points to track changes or developments within that group. The core idea is repeated measurements over time to assess trajectories rather than a single snapshot.
Option 2: 'prospective' — Measuring that group over time is an example of prospective research in the sense that data collection is planned to occur forward in time from the start of the study, observing outcomes as they unfold. However, it’s worth noting that while prospective designs are common in longitudinal studies, not all longitudinal studies are necessarily labeled as purely prospective (some could be retrospective or use historical data for parts of the timeline). The key point is the forward-facing nature of data collection and the temporal sequence, which aligns with the idea of prospective research.
Overall, both statements describe facets of studying change over time: the first names the design (longitudinal study), and the second identifies the temporal orientation of data collection (prospective).

COGS14A_SP25_A00 [COGS 14A, SP25] Quiz 8, due before midnight on Wednesday

If you wanted to study changes within a group of individuals, you would use a longitudinal study . Measuring that group over time would be an example of prospective research.

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