Predictions from Wagner's Structural Analysis theory were tested to validate a theoretical explanation of the personality of mentally retarded adults. The Rorschach and Hand Test were administered to 44 medical students and 60 institutionalized mentally retarded adults. Results coincided with predictions based on Structural Analysis. Implications of these results for the diagnosis of mental retardation were discussed. The potential of a special Rorschach Facade Self Index for differential diagnosis of other forms of psychopathology was noted.
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