Intellectual functioning in lobotomized and non-lobotomized long term chronic schizophrenic patients

Administered the WAIS routinely to 28 long term hospitalized chronic schizophrenic patients who had a bilateral prefrontal lobotomy during the years between 1948 and 1954 and 28 of their non-lobotomized counterparts matched on appropriate demographic characteristics. No statistically significant t-score differences between group means were demonstrated on any of the 11 subtests or three scale IQs.