An online and free web application designed to help you learn which of 16 reasoning styles you use, your overall level of rationality, and what you can do now to improve your rationality skills

We tested 3 personality systems to measure how accurate each is and combined them into the Ultimate Personality Test. In 12 minutes, you'll learn your Jungian (MBTI style), Big 5, and Enneagram results and can automatically compare your results with friends.