Test validity

Okay, kiddo, let me explain what "test validity" means in a way that you can understand. Do you know what a test is? It's like a quiz or an exam that you take in school, right? Well, sometimes people make tests to measure how well you know something or how good you are at doing something.

Now, when people make these tests, they want to make sure that the test is actually measuring what it's supposed to measure. That's where "test validity" comes in. Test validity means that the test really is measuring what it's supposed to measure.

Let's say you're taking a math test, and the teacher wants to know how well you can add and subtract. But instead of asking you math problems, the test asks you history questions. That wouldn't be a very valid test, would it? Because it's not measuring what it's supposed to measure.

So, if a test is valid, that means it's doing a good job of measuring what it's supposed to measure. And if it's not valid, that means it's not doing a good job and you might not get accurate results. Does that make sense, little one?