Types of Reliability
1.
Test-retest reliability is a
measure of reliability obtained by administering the same test twice over a
period of time to a group of individuals. The scores from Time 1 and Time
2 can then be correlated in order to evaluate the test for stability over
time.
Example: A test designed to assess student learning in
psychology could be given to a group of students twice, with the second
administration perhaps coming a week after the first. The obtained
correlation coefficient would indicate the stability of the scores.



