Isabel Myers was particularly fascinated by the concept of introversion and she typed herself as an INFP.
The MBTI was constructed by two Americans: Katharine Cook Briggs and her daughter Isabel Briggs Myers, who were inspired by the book Psychological Types by Swiss psychiatrist Carl Jung. One letter from each category is taken to produce a four-letter test result, such as 'ISTJ' or 'ENFP'. The test attempts to assign a value to each of four categories: introversion or extraversion, sensing or intuition, thinking or feeling, and judging or perceiving. Despite its popularity, it has been widely regarded as pseudoscience by the scientific community. In personality typology, the Myers–Briggs Type Indicator ( MBTI) is an introspective self-report questionnaire indicating differing psychological preferences in how people perceive the world and make decisions. A chart with descriptions of each Myers–Briggs personality type and the four dichotomies central to the theory.
These are Myers–Briggs personality types but are also used in Socionics and the Keirsey Temperament Sorter. Several terms (e.g., ENFP, INTP and ISFJ) redirect here.
