The present study investigated the types of inaccurate responses, i.e., Don't Know, Semantic, Visual (nonlinguistic), Phonological, Circumlocutory, and Perseverative, made on the Hooper Visual Organization Test by a heterogeneous sample of 68 brain-damaged and 63 substance abuse patients. The mean age of the brain-damaged and substance abuse groups were 46.0 (SD=13.5) and 43.7 (SD=12.9) yr., respectively. Analysis showed that the brain-damaged group made significantly more visual and perseverative responses than the substance abuse group. There was significantly more variance in the Visual responses than the Semantic responses for the brain-damaged group. The authors conclude that visuospatial ability is the primary factor for successful performance on this test.
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