However, uh, it is not a valid measure of depression. A test can be reliable without being valid because the test can give consistent scores or consistent results, but it does not measure what it intends to measure. Going back to the question, how can attest be reliable and not valid? Simple. Well validity talks about how well the test measures what it intends to measure. When you talk about reliability, it is about consistency. On the other hand, is how dependably or consistently a test measures a characteristic characteristic rather meaning. So validity is is a characteristic of a test where you measure what I intend to make sure reliability. For example, you want to measure the distance between two objects. When we talk about the validity, it means you measure what you intend to measure example, you intend to measure personality or a characteristic of someone. Before we answer the question that is first differentiate validity and reliability.
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