Über den differentialdiagnostischen Wert der Piotrowski-Zeichen und anderer Zeichengruppen im Rorschach-Versuch

Summary I. Tarcsay's modification of Piotrowski's ten Rorschach signs for the diagnosis of organic and endogenous psychoses was tested on the Rorschach records of 105 genuine epileptics, 50 schizophrenics, 50 psychopaths, and 22 neurotics. The signs were found to give a positive diagnosis of psychosis in about 80% of the true cases of psychoses, but also in 45% of the psychopaths and neurotics, so that they hardly can be used for differential diagnosis. Tarcsay's schizophrenia signs and the neurosis signs of Miale and Harrower-Erickson proved to have still less diagnostic value.