This study used multiple discriminant analysis (MDA) to assess differences among subgroups defined in terms of sex and undergraduate major area, and ethnic group and undergraduate major area, with respect to patterns of performance on Graduate Record Examination (GRE) item-type part scores. Special subscores based on item types included in the current GRE General Test were derived for the study. The correlations of departmentally standardized scores on these subtests with a similarly standardized self-reported undergraduate GPA (SR-UGPA) criterion were analyzed. Multiple regression analysis was used to determine the relative contribution of the item-type part scores to prediction for the various subgroups. Predicted SR-UGPA means for subgroups, based on general major-area regression equations using GRE item-type part scores as predictors were compared with comparable predicted means using GRE total scores as predictors. The study was based on data from GRE files for 9,375 examinees in 12 fields of study, representing 437 undergraduate departments from 149 colleges and universities. Raw total number-right scores, similar raw scores based on the nine basic GRE General Test item types, a raw vocabulary score, and a raw reading comprehension score were computed. Item-type scores based on verbal and analytical ability item types provided more information about group differences than did total ability scores. (JAZ)