Test validity theory

Test validity theory assesses whether a test measures what it is intended to measure. Essentially, it's about ensuring the test’s results accurately reflect the specific skill, knowledge, or trait it aims to evaluate. Validity involves examining how well the test aligns with real-world outcomes or other trusted measures of the same concept. A valid test provides meaningful, relevant, and accurate information, which is critical for making informed decisions based on test results. Without validity, test scores can be misleading, undermining their utility and trustworthiness.