Key points are not available for this paper at this time.
Mary R. Jackman, Michael J. Muha, Education and Intergroup Attitudes: Moral Enlightenment, Superficial Democratic Commitment, or Ideological Refinement?, American Sociological Review, Vol. 49, No. 6 (Dec., 1984), pp. 751-769
Jackman et al. (Sat,) studied this question.