Psychometric pattern of schizophrenics on the Wechsler-Bellevue Intelligence Test.

An evaluation of Wechsler-Bellevue patterns in schizophrenia.

“…The differences in diagnostic patterns secured in the various studies have been emphasized in several recent reports [3,7,9] and need only brief mention here. The pattern variations are perhaps better seen graphically as portrayed in Figure 1.…”

“…The subtest means for the present group of subjects, for example, are considerably higher in most cases than the means of the group tested by Magaret [5]. It is for this reason that a ranking method has been used in other studies [7,8] to compare the patterns of different groups of subjects. A comparison of the rank order of the subtests shows some similarities in pattern in the different studies as well as some important differences.…”

“…The subject's mean subtest scores along with the sigma and rank order of the subtests are given in Table I. Also included in this table are comparable data from three other studies, [4,5,7]. It is apparent from the mean IQ as well as the subtest means that the schizophrenic groups differ in terms of the level of mental functioning.…”

“…Such an approach overcomes the difficulty of comparing groups whose absolute scores differ so much that comparison of actual scores would be somewhat meaningless. On the other hand, some investigators merely compare the mean subtest scores of schizophrenics with those of normals and where statistically significant differences between subtest scores are obtained, a diagnostic difference is inferred [7]. This method, of course, overlooks the fact that the difference in IQ or mental level between the schizophrenic and normal groups affects the mean subtest scores.…”

An evaluation of the use of Bellevue-Wechsler subtest scores as an aid in psychiatric diagnosis.

“…Schizophrenic patients are in most cases highly variable in their general behavior and marked intertest variability would be expected for such cases. The variability of the schizophrenic with respect to the subtests of the Bellevue-Wechsler has been reported by Magaret [5], Wechsler [14], Rabin [8], and Olch [7]. (Gilliland and his collaborators disagree with these investigators, however [3].…”