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) ...

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

Dimensional models of psychopathology may highlight symptom continua, but they do not answer the central question of whether our diagnoses reflect real entities in nature.