A comparison of three neuropsychological tests: the Weigl, Hooper, and Benton

The accuracy of prediction of brain dysfunction for three neuropsychological tests-the Weigl, the Hooper, and the Benton-was compared. Sixty-six male, veteran, psychiatric inpatients were administered all three tests, and diagnoses of brain dysfunction or intactness were made by their ward psychiatrist, who used neurodiagnostic techniques. The results disclosed that each test alone can predict brain dysfunction significantly better than chance. All chi 2 tests were significant at the .025 level or better. When the Weigl was used as a moderator variable with the Hooper and also with the Benton, the p values for each test were somewhat reduced (p = .005 and .01), an indication of improvement in predictive power. When the percentage of predictive accuracy (hit rates) for the three tests used alone and in combination was analyzed, it was shown that the hit rate is increased by combining the Weigl with the Hooper and also with the Benton. It is increased further by combining all three tests into a predictive index.