The Myers-Briggs Type Indicators (MBTI) assessment was developed by Isabel Myers and Katherine Briggs to understand differences and similarities in human personalities. It identifies an individual's unique personality preferences through a self-assessment that produces a four-letter code, with 16 possible combinations defining different personality types. The MBTI is one of the most widely used tools in organizations because it is a self-reporting and non-judging instrument that indicates preferences and has been researched and validated across cultures.