If the same observer provides consistent ratings across time, this demonstrates which reliability?

If the same observer provides consistent ratings across time, this demonstrates which reliability?

• A. Intra-observer reliability
• B. Inter-observer reliability
• C. Test-retest reliability
• D. Construct validity

Answer: (A)

Intra-observer reliability is demonstrated when one observer rates the same thing consistently over time. This shows the evaluator’s judgments are stable and not influenced by temporary factors like mood or memory. Inter-observer reliability would involve how well different observers agree with each other, not a single observer. Test-retest reliability looks at the stability of a measurement across time for the entire instrument, not just one person’s ratings. Construct validity concerns whether the measure actually assesses the intended concept, not how consistently it is rated over time. So, the scenario described reflects intra-observer reliability.

Intra-observer reliability is demonstrated when one observer rates the same thing consistently over time. This shows the evaluator’s judgments are stable and not influenced by temporary factors like mood or memory. Inter-observer reliability would involve how well different observers agree with each other, not a single observer. Test-retest reliability looks at the stability of a measurement across time for the entire instrument, not just one person’s ratings. Construct validity concerns whether the measure actually assesses the intended concept, not how consistently it is rated over time. So, the scenario described reflects intra-observer reliability.