Patterns of Thought Disorder on Psychological Testing

Abstract

One-hundred thirty-eight hospitalized adolescents exhibiting a broad range of psychopathology were divided into four groups based on the presence or absence of significant thought disorder on the Wechsler IQ (using Johnston and Holzman's Thought Disorder Index) and the Rorschach (using Exner's Schizophrenia Index). All subjects in the four IQ/Rorschach cross-classified groups (group A, low disordered IQ/low disordered Rorschach; group B, low disordered IQ/high disordered Rorschach; group C, high disordered IQ/high disordered Rorschach; group D, high disordered IQ/low disordered Rorschach) were rated as well on clinical symptomatology (using the Psychiatric Evaluation Form, a scale developed by Spitzer and Endicott). A multivariate analysis of variance comparing the means of the Psychiatric Evaluation Form variables for the four groups yielded significant interactions and significant main effects. The results portrayed a symptomatic picture of depression and acting out in group A, borderline-like traits in group B, psychosis in group C, and interpersonal difficulty in group D. These results are interpreted as support for the value of comparative measures of thought disorder in clinical evaluation. Further research to investigate the heretofore undescribed group D is recommended.

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