The personality brokers

Draws from never-before-published documents to examine the history, popularity, and efficacy of the Myers-Briggs Type Indicator. Discusses the lives of Katherine Briggs and her daughter Isabel Briggs Myers who had no formal training in psychology, how the test became a worldwide cultural icon, and the lack of evidence validating its results. Also theorizes that the popularity of the test comes from humans' desire to define, categorize, quantify, and understand ourselves.