Despite decades of refinement to diagnostic manuals, questions persist about the consistency and scientific basis of psychiatric diagnosis. A new article Research across 19 countries finds that ...

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) ...

Consumer Reports receives a wide range of questions from enthusiasts and the auto industry looking for a deeper understanding of the methodology used in the reliability section of our latest Annual ...