Predictive validity refers to the extent to which a test or assessment accurately forecasts future performance or outcomes. It is a crucial aspect of evaluating the effectiveness of tools like psychological tests, educational assessments, or employment selection processes. A test with high predictive validity will consistently predict how well an individual will perform in a specific context. To measure predictive validity, researchers often compare test scores with actual performance results over time. For example, if a college entrance exam successfully predicts students' future academic success, it demonstrates strong predictive validity. This concept helps ensure that assessments are reliable and useful for decision-making.