Validity Theory

Validity Theory concerns how accurately a test or measurement reflects what it is intended to measure. In simple terms, it asks: Is this tool truly assessing the right concept or skill? For example, a math test is valid if it genuinely measures mathematical ability, not reading skills. Validity involves examining whether the test’s content, structure, and results align with the underlying idea being tested. Ensuring validity is crucial for trustworthiness, as it confirms that decisions based on test results are based on accurate, meaningful information.