Relationship between the Whitaker Index of Schizophrenic Thinking and intelligence in paranoid and nonparanoid schizophrenics

20 paranoid schizophrenics, 20 nonparanoid schizophrenics, and 20 normal Ss were administered the Whitaker Index of Schizophrenic Thinking (WIST) and the WAIS-Clarke vocabulary test (a multiple-choice version of the WAIS Vocabulary subtest). Ss were aged 18-65 yrs and had an IQ of at least 85. Chlorpromazine equivalencies were also calculated. Results indicate that there was an inverse correlation between the WIST and intelligence for all groups regardless of drug dosage but that no significant differences exist between paranoid and nonparanoid schizophrenics on degree of thought pathology. (10 ref)