A nurse researcher is using an instrument that provides similar result

A nurse researcher is using an instrument that provides similar results each time it’s implemented. This is an example of which of the following?

1. Validity
2. Reliability
3. Consistency
4. Variability

ANSWER

Correct Answer: 2
Rationale 1: Validity is the degree to which an instrument measures what it is supposed to measure.
Rationale 2: Reliability is the degree of consistency with which an instrument measures a concept or variable. If it is reliable, repeated measurement of the same variable should yield similar or nearly similar results.
Rationale 3: Consistency is a component of reliability.
Rationale 4: Variability does not describe instrument measurement, but variances in data.