Myers–Briggs Type Indicator

The Myers-Briggs Type Indicator (MBTI) is a self-report questionnaire claiming to sort people into 16 personality types based on four dichotomies: introversion/extraversion, sensing/intuition, thinking/feeling, and judging/perceiving. Developed during WWII by Katharine Cook Briggs and Isabel Briggs Myers, it draws on Carl Jung's theories but is widely criticized as pseudoscience. Research shows poor validity, low test-retest reliability (39-76% of people get different types after five weeks), and no bimodal distribution supporting distinct types. The MBTI lacks predictive power for job performance, career success, or relationship satisfaction. Despite criticism, it remains popular in business, education, and government. Studies indicate correlations with Big Five traits but no evidence for type dynamics. The test is not recommended for hiring or counseling.