Reliability is the precursor to validity.

Reliability is the precursor to validity.

• A. Reliability is more important than validity.
• B. Validity is the only criterion for usefulness.
• C. Reliability is not related to validity.
• D. Reliability is the precursor to validity.

Answer: (D)

Reliability is the consistency of scores in measurement, and it must be present before any claim of validity can be made. If a test yields unstable or random results, there’s no trustworthy basis to argue that it measures a specific attribute or that the interpretations and decisions based on those scores are sound. Once you have reliable scores, you can gather evidence about validity—whether the test truly assesses the intended construct, covers the relevant content, and predicts outcomes it should predict. However, reliability alone does not guarantee validity; a test can be highly reliable yet fail to measure the right thing, so both reliability and validity evidence are needed. The statement is correct because reliability provides the essential foundation for validity, rather than implying one is categorically more important or that validity alone suffices, and because reliability is related to validity through the necessity that stable measurement is a prerequisite for meaningful inferences.

Reliability is the consistency of scores in measurement, and it must be present before any claim of validity can be made. If a test yields unstable or random results, there’s no trustworthy basis to argue that it measures a specific attribute or that the interpretations and decisions based on those scores are sound. Once you have reliable scores, you can gather evidence about validity—whether the test truly assesses the intended construct, covers the relevant content, and predicts outcomes it should predict. However, reliability alone does not guarantee validity; a test can be highly reliable yet fail to measure the right thing, so both reliability and validity evidence are needed. The statement is correct because reliability provides the essential foundation for validity, rather than implying one is categorically more important or that validity alone suffices, and because reliability is related to validity through the necessity that stable measurement is a prerequisite for meaningful inferences.