Myers-Briggs Type Indicator Report

The historical backdrop of the Myers-Briggs Type Indicator (MBTI) began with Carl Jung, the organiser of analytical psychology. Jung believed that individuals are either stimulated by the outer world (Extraversion) or their own inner world (Introversion). In the same way Jung observed individuals took in data (Perceiving) or organise data and frame a conclusion (Judging). Additionally Jung noted that individuals mostly demonstrate a dominant part. In this way, in 1921, Jung distributed Psychological Types in which he displayed the thought of Jungian models (Myers-Briggs Type Indicator Manual, 2012). Isabel Myers-Briggs developed the MBTI in the 1920s based on Jung’s theoretical constructs with an additional two dimensions of styles of living, consisting of a fourth scale that measures perceiving and judging (Myers, McCaully, Quenck, & Hammer, 2003; Mullins, 2005; Schreuder & Coetzee, 2011). The outcome of additional dimensions of styles to Jung’s theory results in the MBTI being designed to measure 16 personality types: ISTJ (introversion, sensing, thinking, judging), ISFJ (introversion, sensing, feeling, judging), INFJ (introversion, intuition, feeling, judging), INTJ (introversion, intuition, thinking, judging), ISTP (introversion,
sensing, thinking, perceiving), ISFP (introversion, sensing, feeling, perceiving), INFP (introversion, intuition, feeling, perceiving), INTP (introversion, intuition, thinking, perceiving), ESTP (extraversion, sensing, thinking, perceiving), ESFP (extraversion, sensing, feeling, perceiving), ENFP (extraversion, intuition, feeling, perceiving), ENTP (extraversion, intuition, thinking, perceiving), ESTJ (extraversion, sensing, thinking, judging), ESFJ (extraversion, sensing, feeling, judging), ENFJ (extraversion, intuition, feeling, judging) and ENTJ (extraversion, intuition, thinking, judging) (Coetzee & Schreuder, 2010; Myers, McCaully, Quenck, & Hammer, 2003).

Wagner and Walker (1983) compared results from the MBTI, the Millon Personality Inventories, and the Enneagram Personality Inventory (EPI).
Recommended a fit between the enneagram type descriptions and the comparing formats on the Millon and Myers-Briggs inventories. The results indicated a Cohen’s Kappa Coefficient ranging from .76 to 1.00 for the nine types for reliability. The concurrent validity was highly significant for both the Myers-Briggs and Million scales and the nine personality types (Wagner & Walker, 1983). In figure 2.3 Richards (1997) presented a chart summarising the Enneagram Types and the MBTI types based on findings from combined data generated from a study conducted by Richards, Flautt and Baron (Richards,
1997).