Alternate forms reliability eliminates some of the problems found in test-retest reliability but raises other concerns.

Alternate forms reliability involves administering two different forms of the same test to the same group of individuals to assess consistency in scores. This eliminates some of the problems found in test-retest reliability, such as practice effects and memory bias. However, alternate forms reliability may raise concerns about the equivalence of the two forms of the test and the potential for differential learning or guessing between the two forms.