| Abstract: | This research is concerned with the question of differential predictability of handicapped and non-handicapped subgroups. The specific question posed was: Is the performance of non-handicapped subgroups of skilled, clerical, and non-skilled workers more predictable than that of handicapped subgroups when aptitude measures are used as predictors? Correlations between scores on selected scales of the GATB and a composite performance criterion were obtained for each of the subgroups. Results showed a pattern of consistently lower validities for the handicapped which suggests that aptitude measures typically used in selection may not be appropriate for the handicapped, and that validity coefficients may be diluted by the inclusion of this subgroup with the non-handicapped in validity studies. |
