Which design requires the smallest number of participants

Question

Quizplus · Accepted Answer

A one-shot case study requires the smallest number of participants as it only involves measuring a single group at one time point. Correlational studies require a larger sample size to detect significant relationships, quasi-experiments require multiple groups and potentially multiple measurements, and posttest-only control groups also require at least two groups (an experimental group and a control group) to compare outcomes.

Which Design Requires the Smallest Number of Participants