In everyday language, the term validity is typically used to describe something as being trustworthy or legit. It's meaning ...

Investigators tested a new healthcare tool in accurately assessing the health and well-being of children with Down Syndrome.

In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...

Those of us in the business of psychological measurement use the terms reliability and validity a lot. You've probably seen those terms on the Psychology Today website (they appear thousands of times) ...