The purpose of the Myers-Briggs Type Indicator® (MBTI) tool is to make the theory of psychological types, based on work by the famous psychologist C. G. Jung, both understandable and useful in people’s lives. The essence of the theory is that much seemingly random variation in people’s behaviour is actually quite orderly and consistent, being due to basic differences in the ways people prefer to use their perception and judgment.

Perception involves all the ways of becoming aware of things, people, happenings, or ideas whereas Judgment involves all the ways of coming to conclusions about what has been perceived.

The MBTI tool provides information on our preferences and does not measure trait, ability, or character. The MBTI tool is different from many other psychological instruments and also different from other personality tests. There is no right o wrong with all preferences having positive features.

There have been hundreds of studies over the past 40 years that have proven the instrument to be both valid and reliable.

The theory of psychological type was introduced in the 1920s by Carl G. Jung and the MBTI tool was then developed in the 1940s by Isabel Briggs Myers. Ongoing research has provided users with updated and new information about psychological type and its applications with more than two million people worldwide taking the tool each year.