A performance appraisal tool that is able to measure the same person at multiple intervals in a stable and consistent manner has achieved:
a. equivalence.
b. construct validity.
c. inter-rater reliability.
d. test-retest reliability.
D
Testing the reliability of a tool involves examining the amount of random error. The characteris-tics of the tool must be dependable, consistent, accurate, and comparable (Burns & Grove, 2001). Stability of the performance criteria demonstrates consistency with repeated measures of the same tool. Nurse managers who are comfortable with a performance appraisal tool should be able to measure the same person at multiple intervals in a stable and consistent manner. This is referred to as test-retest reliability.
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