What is the difference between reliability and validity in PE assessments?

• A. Reliability is the consistency of results.
• B. Validity is defined as assessing speed rather than what is intended.
• C. Reliability and validity are the same thing.
• D. Validity ensures reliability.

Answer: (A)

Reliability and validity measure different qualities of a PE assessment. The main idea is that reliability is about consistency: if you repeat the test under the same conditions, you should obtain similar results, and if multiple judges score a performance, their scores should align. Validity is about accuracy: the test must actually measure the attribute it’s intended to measure. A test can give consistent results (reliable) but still not assess the right thing, which means it’s not valid. It’s also possible to have a test that’s reliable but not valid, while validity relies on the test truly reflecting the intended construct, not just producing stable numbers. In practice, you want assessments that are both reliable and valid so that decisions about performance and progress are meaningful.