Which reliability method involves comparing scores on two equivalent forms of the same test administered to the same group?

Which reliability method involves comparing scores on two equivalent forms of the same test administered to the same group?

• A. Equivalent Forms
• B. Test-Retest
• C. Kuder-Richardson
• D. Test-Retest with Equivalent Forms

Answer: (A)

The main idea here is parallel (or alternate) forms reliability. This method checks consistency by giving two different but equivalent versions of the same test to the same group and correlating the scores. If the two forms are truly equivalent in difficulty and content coverage, a student’s score should be similar across forms, showing that the test measures the same construct consistently regardless of which items appear. This approach helps avoid practice effects and memory that might inflate or deflate scores if the same items were repeated. This is distinct from testing stability over time, where the same form is given on two occasions and changes in scores could reflect actual change in the trait or memory of the items. It also differs from internal consistency methods, which look at how well items on a single form relate to each other to measure the same construct. A combined “test-retest with equivalent forms” isn’t the standard approach described by two equivalent forms, so it doesn’t fit the scenario as cleanly.

The main idea here is parallel (or alternate) forms reliability. This method checks consistency by giving two different but equivalent versions of the same test to the same group and correlating the scores. If the two forms are truly equivalent in difficulty and content coverage, a student’s score should be similar across forms, showing that the test measures the same construct consistently regardless of which items appear. This approach helps avoid practice effects and memory that might inflate or deflate scores if the same items were repeated.

This is distinct from testing stability over time, where the same form is given on two occasions and changes in scores could reflect actual change in the trait or memory of the items. It also differs from internal consistency methods, which look at how well items on a single form relate to each other to measure the same construct. A combined “test-retest with equivalent forms” isn’t the standard approach described by two equivalent forms, so it doesn’t fit the scenario as cleanly.