The Myers-Briggs Type Indicator (MBTI) is a psychometric tool that measures personality preferences based on four dimensions: Extraversion-Introversion, Sensing-Intuition, Thinking-Feeling, and Judging-Perceiving. The MBTI assessment is one of the world's most popular personality tools and is used by more than 88 percent of Fortune 500 companies. It can provide insight into what makes an individual unique and how they interact with others. The assessment is based on the personality theory created by Isabel Myers and Katharine Briggs and is available through certified practitioners or online