Forbes contributors publish independent expert analyses and insights. I research ad fraud and digital marketing. Many marketers think they’ve got ad fraud solved, not only because the Association of ...

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 in psychology suggests something similar—it's all about whether we can trust ...

This is the second in a series of articles about impact measurement for social entrepreneurs. Social entrepreneurs who are serious about having impact or about attracting capital from sophisticated ...