The inkblot test created 80 years ago by the Swiss psychiatrist Hermann Rorschach is both the most cherished and the most scorned of all instruments used to evaluate emotional states, psychopathology, and personality. The Rorschach is commonly used to assist in psychiatric diagnosis, but research demonstrates that it rarely works well for that purpose....Studies indicate that people who respond to the inkblots can fake schizophrenia, major depression, and post-traumatic stress disorder without being detected....That means clinicians who use the Rorschach are in danger of detecting psychiatric disturbances that are not present.
Excerpted from The Harvard Mental Health Letter, Vol. 18, No. 6. pp
5,6 as cited in Psychoheresy Awareness Letter