Whats the difference between the MBTI and all the other personality “tests” out there?
The biggest difference is the amount of research that has gone into the questions and scoring the results. That gives the MBTI great reliability and scientific validity. Others have created instruments that are supposed to reveal the same information. Yet serious researchers will use either the MBTI or the NEO-PI. Anyone can use the same four letter type categories. The MBTI has been researched and refined for over 70 years, in thousands of studies. You can get useful results from other instruments. For those who are not sure about where they fall on a scale, the MBTI Step II gives the clearest indication of your preferences.