According to Warren Street’s “Today in the History of Psychology,” on June 6 1921, “Hermann Rorschach’s book Psychodiagnostik, describing his inkblot method of personality assessment, was published in Switzerland by Bircher, the eighth publisher to review the manuscript and cards. Rorschach died 10 months afterward.”
Although a standard psychiatric assessment instrument for decades, the Rorschach inkblot test is no longer widely believed to be valid measure of psychiatric status. According to the Wikipedia entry, however, “The Rorschach is currently the second most commonly used test in forensic assessment, after the MMPI, and is the second most widely used test by members of the Society for Personality Assessment.” It is not widely known that Rorschach decided which inkblots to include in his test on the basis of which best differentiated psychotic from “normal” individuals. Apparently his empirical conclusions did not generalize well beyond the original set of observations, however.