Intrarater reliability refers to the consistency or equivalence of repeated measurements made by the same person over time.

• A. Intrarater reliability
• B. Interrater reliability
• C. Test-retest reliability
• D. Alternate forms reliability

Answer: (A)

Consistency of repeated measurements by the same person over time is intrarater reliability. This means if one clinician administers or records measurements on multiple occasions, close agreement across those measurements shows the rater is reliable. It’s different from interrater reliability, which looks at agreement between different clinicians. Test-retest reliability also deals with repeated measurements over time but focuses on the stability of the measurement over time in general, not specifically the same rater. Alternate forms reliability concerns whether different versions of a test yield equivalent results. So the statement correctly identifies intrarater reliability as the consistency of one rater across time.