“…The popular and somewhat controversial MBTI assesses four attitudes or orientations (extroversion vs. introversion, judging vs. perceiving) and four functions (sensing vs. intuition, thinking vs. feeling). Several recent and earlier studies have questioned the validity of the MBTI on several grounds, such as its criterion and construct validity (e.g., Arnau et al, 2003;Garden, 1991;McCrae and Costa, 1989;Pittenger, 2005), its use far beyond the original theoretical intent developed by Jung (Mitchell, 2000), and the potential confusion and interaction across scales related to determination of dominant, auxiliary, tertiary, and inferior functions (Gardner and Martinko, 1996;James, 2003). Validation research on the most recent Form M has also been criticized because the sensing-intuition and judging-perceiving scales were found to be unrelated for half of the 16 MBTI types in the very sample used to validate the instrument (Mitchell, 2000).…”