The animal and opposite technique, a projective drawing device, was used objectively to show that paranoid schizophrenics (n = 20) exhibit more rigidity in perceptions than nonparanoid psychiatric inpatients (n = 17). Data from a sample of 37 and a cross-validation sample of 133 are described. The paranoid schizophrenics performed with more rigidity as predicted in both samples. The results show the potential utility of the technique in clinical diagnosis and illustrate perceptual rigidity in paranoid schizophrenics.
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