Interrater reliability is best described by which statement?

• A. When different assessors give the same test, a reliable test will give similar results.
• B. When a test yields the same score on two occasions.
• C. When test items cover all content areas.
• D. When scores predict future performance.

Answer: (A)

Interrater reliability is about how consistently different evaluators score the same behavior or response. When multiple clinicians rate the same performance and their scores align, reliability across raters is high, showing that the scoring system yields similar judgments regardless of who does the rating. This matters because it means results aren’t biased by a single rater’s perspective. The statement that fits this idea describes how different assessors give the same test and obtain similar results. Other options describe different concepts: consistency over time is test-retest reliability, coverage of content relates to content validity, and predicting future performance reflects predictive validity.