161found in the negro group. The interaction effects found on PD, MF, and Sc are probably due to the fact that these scores were significantly higher in negroes in the tuberculosis hospital, but not in the other institutions. SUMMARYThese findings are consistent with findings in the area of measurement of intellectual abilities, that social factors such as occupational level, education, etc., rather than race determine most of the variance in test scores. It would appear that rather than trying to develop appropriate norms for negro and white subjects on the MMPI, we need to evaluate the MMPI findings for social or racial groups for particular settings. 2. HOKANSON, J. E. and CALDEN, C. Negro-white diffcrences on the MMPI. J . d i n . PsychoZ., 1960, 16, 32-33.

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