It was hypothesized that the uniform T-score procedure was one possible source of observed differences between the MMPI-2 T scores and the MMPI T scores. MMPI-2 linear T scores were computed for a sample of 200 psychiatric outpatients whose MMPI-2 and MMPI T scores had been determined at the same point in time. Differences created by the uniform technique were slight and did not exceed 1.2 T-score points. Contrary to hypothesis, the uniform T-score procedure reduced the differences between mean MMPI-2 T-scores and the MMPI T scores on 12 of the 16 scales. These data suggest that the differences between the MMPI and MMPI-2 T scores are mainly due to differences between the normative samples.