The effect of inquiry on the Exner Comprehensive System

The effect of inquiry on the Comprehensive System was tested by scoring 130 protocols of patients and normals with and without inquiry. The absence of inquiry significantly reduced the means for Developmental Quality-vague (DQv), Form Quality-unusual (FQu), the sum of color responses (SumC), the sum of shading responses (Sum Shading), and the weighted thought disorder measure (W Sum6 SP SC), but significantly increased pure form (F). The effect for W Sum6 SP SC was strongest for schizophrenic protocols. Liberalized scoring rules were established in an attempt to restore the interpretative validity of the scoring categories distorted by the lack of inquiry. The new rules significantly improved the accuracy of color and shading categories, but did not improve the special scores measure of thought disorder.