Which of the following must be true for a test or questionnaire to be considered reliable as measured by the computation of test-retest reliability?
A)People would have to have identical scores on the two administrations of the test.
B)People would have to hold very different relative positions in the distributions for the two test times.
C)People would have to hold similar relative positions in the distributions for the two test times.
D)People would have to have scores on the two administrations of the test that were uncorrelateD.

Question

Quizplus · Accepted Answer

Test-retest reliability measures the consistency of scores on the same test administered on two different occasions. For the test to be considered reliable, individuals should hold similar relative positions in the distributions for the two test times, indicating consistent performance over time. Option A is incorrect because the scores do not need to be identical, only relatively consistent. Option B is incorrect because significant changes in relative positions would suggest instability in the construct being measured. Option D is incorrect because uncorrelated scores would indicate no relationship between the two administrations, which is not desirable for a reliable test.

Which of the Following Must Be True for a Test