Which aspect of reliability is demonstrated when two different assessors produce similar scores?

• A. Test-retest reliability
• B. Internal consistency
• C. Parallel-forms reliability
• D. Inter-rater reliability

Answer: (D)

Reliability in assessment hinges on consistent scoring across raters. When two independent assessors score the same performance and arrive at similar results, it shows inter-rater reliability—the degree to which different raters give comparable scores. This indicates the scoring criteria are clear and applied uniformly, so the score reflects the participant’s performance rather than who happens to rate it. If raters disagreed, it would suggest ambiguity in the rubric or subjective judgment influencing the scores.

For context, other reliability types describe different consistency checks: test-retest reliability looks at score stability over time for the same person, internal consistency examines how well items on a single test measure the same construct, and parallel-forms reliability compares different versions of a test administered to the same person.