Wood, J. M., Nezworski, M. T., Garb, H. N., & Lilienfeld, S. O. (2001). The misperception of psychopathology: Problems with norms of the Comprehensive System for the Rorschach. Clinical Psychology: Science and Practice, 8(3), 350-373.

The norms of the Comprehensive System (CS; J. E. Exner, 1974) for the Rorschach Inkblot test have been praised for their scientific and clinical value. However, recent findings by T. W. Shaffer et al (1999) suggest that the CS norms are inaccurate. The curent authors examined 14 CS variables in 32 studies of nonpatient American adults. The participants in these studies exhibited statistically and clinically significant differences from CS nonpatient norms for all 14 variables. Overall, nonpatient adults tended to appear pathological when compared with the CS norms. Possible explanations for the discrepancies between nonpatient adults and the CS norms are discussed and the validity of the CS is reassessed in light of the present findings. The implications of these findings for misdiagnosis and the misperception of psychopathology are also discussed. These results suggest that use of the CS norms in clinical or forensic settings is inadvisable and that commonly held beliefs about the validity of CS variables are likely to be false and in need of revision. (PsycINFO Database Record (c) 2007 APA, all rights reserved)

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