WIST predictions of brain damage: a follow-up to Albott and Gilbert

As a continuation of diagnostic issues raised by Albott and Gilbert (1973), the present study is an examination of the relative strengths and limitations of the Whitaker Index of Schizophrenic Thinking (WIST) as an indicator of brain damage (N = 59). Specifically, the WIST demonstrated power to avoid false predictions of brain damage and accuracy in predicting brain damage when WIST "signs" are present. A substantial proportion of false negative predictions (no brain damage) indicates that the WIST is not a "test of/for organicity."