Which of the following is a form of reliability?

• A. Interrater Reliability
• B. Face Validity
• C. Content Validity
• D. Exhaustiveness

Answer: (A)

Reliability means a measurement yields stable, consistent results. When more than one person rates the same thing, showing that their ratings align demonstrates interrater reliability. This is specifically about agreement across observers, which is a reliability concern because it affects whether the measurement is dependable regardless of who does the rating. In contrast, face validity and content validity are about validity: face validity asks whether the measure appears to assess the intended construct, and content validity concerns whether the measure covers all relevant aspects of the construct. Exhaustiveness describes how fully a measurement domain is covered, but it isn’t a recognized form of reliability. So the form of reliability described here is interrater reliability.