Discrimination between matched schizophrenics and normals by the Wechsler-Bellevue scale.

Clinical Methods: Psychodiagnostics

“…One of the important methodological contributions to this problem has already been noted-Harper's use (79) of multiple regression equations and beta weights to determine the relative contributions of various subtests to the differentiation of diagnostic groups. In a later application of this method, Harper (78) shows that in discriminating schizophrenic subtypes, pattern analysis can be as much as eight times as powerful as predictions based on knowledge of IQ, CA, and education alone.…”

Chapter IV: Discriminant Analysis

“…Baten and Hatcher (12) differentiated between groups of students taught cooking by two different methods, using a discriminant function based on three measures of cooking ability. Harper (37) used the technic for classifying individuals into normal and schizophrenic groups on the basis of Wechsler-Bellevue subtest scores.…”

Schizophrenic Intellectual Impairment; Uniform or Differential?

“…ferential intelligence test performance associated with schizophrenia may be found in Wells (28), Harris and Shakow (12), Hunt and Cofer (14), Rabin (19), Rabin and Guertin (20), Hunt (13), Magaret (17), and Rotter (21). Supplementing these reviews are more or less specific critiques of the methods used in the various investigations of the hypothesis; among these are the papers of Garfield (6), Jastak (15), Schofield (22), and Harper (10,11). The inconsistent results of investigations of differential impairment and the concomitant general uncertainty of the concept have been attributed to the following inadequacies of experimental design (among others):…”