A researcher who administers the same scale to the same respondents at two separate times to test for stability is using which method of assessing the scale's reliability?
A)coefficient alpha
B)split-half method
C)test-retest method
D)before/after method

Question

Quizplus · Accepted Answer

The test-retest method is the most appropriate choice for assessing the stability of a scale over time. By administering the same scale to the same respondents at two separate points in time, researchers can evaluate the consistency of the results and determine if the scale produces reliable measurements over time. The other methods listed, such as coefficient alpha, split-half method, and before/after method, are useful for assessing other aspects of reliability, but they are not as appropriate for testing stability over time.

A Researcher Who Administers the Same Scale to the Same