Which method involves comparing two versions of the same test to assess reliability?

The method that involves comparing two versions of the same test to assess reliability is known as the equivalent forms method. This approach is used to determine the consistency of test results when two different but similar forms of a test are administered to the same group of individuals. By analyzing the scores from both forms, educators and researchers can ascertain whether the tests yield comparable results, which helps to establish the reliability of the test. This is particularly useful when the goal is to ensure that different versions of an assessment measure the same constructs in a consistent manner.

In contrast, the test-retest method involves administering the same test to the same subjects on two separate occasions and measuring consistency over time. The split-half method assesses reliability by dividing a single test into two halves and comparing the scores from each half. Content validity refers to the extent to which a test measures the entire content it's supposed to assess, rather than a method for comparing test versions. Each of these other methods serves a different purpose in the assessment of reliability and validity, distinct from the equivalent forms method.