WAIS Error Types in Schizophrenics and Organics

Abstract

The differences in the frequencies with which four WAIS error types appeared in the protocols of hospitalized schizophrenic and brain-damaged patients were analyzed at two length-of-hospitalization levels. At the low-hospitalization level, Inadequate Attempts were more frequent among organics while No Attempts were more common to schizophrenics. However, there were no differences at the high-hospitalization level. The hospitalization length-diagnosis interaction made the usefulness of the error types as convenient diagnostic tools questionable. Several theoretical implications were considered.