The test-retest method assumes that the phenomena under study does not change.

Question

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The test-retest method is based on the assumption that the phenomenon being studied remains constant over time, so that any differences observed between the results of two tests taken at different times are unlikely to be due to changes in the phenomenon itself. Therefore, this method is most appropriate for studying stable, unchanging phenomena.

The Test-Retest Method Assumes That the Phenomena Under Study Does