Concurrent validity

Concurrent validity is a way to measure how well a new test or assessment corresponds with an established one, conducted at the same time. If both tests aim to evaluate the same thing—like depression severity—their results should be similar if the new test is valid. For example, if a new survey shows high depression levels and a well-known, trusted depression scale also shows high levels at the same time, the new test is considered to have good concurrent validity. Essentially, it shows that the new method produces results that align well with existing, accepted measures.