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1927, in reference to a personality test using ink blots, developed by Swiss psychiatrist Hermann Rorschach (1885-1922). The town so named on the Swiss side of Lake Constance is from an early form of German Röhr "reeds" + Schachen "lakeside."
Rorschach Ror·schach (rôr'shäk', -shäKH'), Hermann. 1884-1922.
Swiss psychiatrist. His inkblot test, introduced in 1921, has become a standard clinical diagnostic tool in psychiatry.