During World War II, two women developed what is often called the most popular personality test in the world. It’s known as the Myers-Briggs Type Indicator test (aka MBTI personality test). Today, it’s everywhere: It’s on people’s dating profiles, it’s used in workplace training, and it’s not uncommon for managers to use it when making decisions about who to hire and who to promote. But what does scientific psychological research actually tell us about the accuracy and validity o...
