The method for estimating test reliability that best accounts for all the possible sources of error is
A) administer different forms of the test at a single sitting.
B) administer the same form of the test on two different occasions.
C) administer different forms of the test to different subjects.
D) administer different forms of the test on two different occasions.

Question

Quizplus · Accepted Answer

Administering different forms of the test on two different occasions is the best method for estimating test reliability that accounts for all possible sources of error, including practice effects, test-retest effects, and subject variability. This method allows for the calculation of the correlation between the two sets of scores, which provides an estimate of the reliability of the test over time. Administering different forms of the test at a single sitting may not account for practice effects, while administering different forms of the test to different subjects may not account for subject variability. Administering the same form of the test on two different occasions may not account for test-retest effects.

The Method for Estimating Test Reliability That Best Accounts for All