Session 4 : Take the following test : Want to know how you deal with people, process information and make decisions? Are you an Extravert or Introvert psychological type? Take this free Jung personality test and find out what psychological type you are according to Jung types. This test measures concepts similar to the MBTI® (Myers–Briggs Type Indicator®) model, originally developed by Katharine Cook Briggs and her daughter Isabel Briggs Myers.