A fascinating biography of two of the most significant yet unknown women in psychology who developed the most popular personality test in history. The biography explores the personal life and professional accomplishments of Katharine Cook Briggs and Isabel Briggs Myers. The book chronicles the saga of a family - their love, their personal tragedies, and their vanguard achievements amidst their fierce support for one another. It is the story of the influence of a strong-willed and determined mother on the work of her daughter, and the daughter's undaunted, unparalleled struggle against formidable odds to realize her dream of bringing Carl Gustav Jung's ideas about psychological type to the aid of people everywhere. Thus was born the Myers-Briggs Type Indicator, given to over two million people in 1990. Readers interested in personality type will find the book an enlightening account of the world's most widely used personality test, while others will enjoy the story of a most remarkable