The effectiveness and equity of applying uniform selection standards to both black and white Air Force enlistees was investigated by regression analyses. For both racial groups, the relationship between the Air Force selection test (Airman Qualifying Examination) as the predictor and a measure of job knowledge (Specialty Knowledge Test as the criterion was compared for airmen belonging to one of 16 promotion groups. Results are reported where criterion scores were underpredicted by the selection test, where there were racial differences in the regression lines, and in instances of differences where criterion scores were overpredicted by the common regression lines. (Author)