The second criterion, Sensing - INntuition defines the method of information perception by a person. Sensing means that a person believes mainly information he or she receives directly from the external world. Intuition means that a person believes mainly information he or she receives from the internal or imaginative world.

The third criterion, Thinking - Feeling defines how the person processes information. Thinking means that a person makes a decision mainly through logic. Feeling means that, as a rule, he or she makes a decision based on emotion.

The fourth criterion, Judging - Perceiving defines how a person implements the information he or she has processed. Judging means that a person organizes all his life events and acts strictly according to his plans. Perceiving means that he or she is inclined to improvise and seek alternatives.

The different combinations of the criteria determine a type. There may be sixteen types. Every type has a name (or formula) according to the combination of criteria. For example:

    ISTJ
Introvert Sensing Thinking Judging or
   ENFP
Extravert INtuitive Feeling Perceiving

The scales of criteria are dichotomic (bipolar) e.g. Extraversion-Introversion (E-I) criterion ranges from 100% on E to 100% on I so it is 200% long and 0% meaning in the middle between 100% E and 100% I. By taking the Jung Typology Test, you will discover your type formula along with a quantitative measure of each of the 4 criteria (strengths of the preferences). Once formula and strengths of preferences are obtained, you can:
- Learn about your personality type by reading your type description. This may help you identify your life style in general as well as your style with respect to specific areas such as business, love, education, communications, conflicts
- Get the list of the most suitable career choices based on your personality, along with some educational institutions where you can receive a relevant degree or training - Jung Career Indicator™
- Take the next step and use the formula and strengths of the preferences for the compatibility assessment of couples by taking the Jung Marriage Test.