AnNPRBest Book of the YearANew York PostBest Book of the YearATimesThought Book of the YearAnIrish IndependentBest Book of the YearThe captivating, untold story of Hermann Rorschach and his famous inkblot testIn 1917, working alone in a remote Swiss asylum, psychiatrist Hermann Rorschach devised an experiment to probe the human mind: a set of ten carefully designed inkblots. For years he had grappled with the theories of Freud and Jung while also absorbing the aesthetic movements of the day, from Futurism to Dadaism. A visual artist himself, Rorschach had come to believe that who we are is less a matter of what we say, as Freud thought, than what we see.After Rorschach's early death, his test quickly made its way to America, where it took on a life of its own. Co-opted by the military after Pearl Harbor, it was a fixture at the Nuremberg trials and in the jungles of Vietnam. It became an advertising staple, a...