Affirmative action is one of the most controversial current public pol
icies-public support has never reached a majority of the electorate fo
r most versions of affirmative action. Many people oppose affirmative
action on the grounds that it violates norms of procedural fairness an
d meritocracy, in spite of the fact that they also support egalitarian
values consistent with it. This article explores this apparent parado
x by testing reactions to affirmative action in college admissions by
comparing three models positing differing roles for values in ideologi
cal reasoning: (1) a central role for values-Tetlock's (1986) value pl
uralism model, (2) a secondary role for values-Lind's (1992) fairness
heuristic hypothesis, and (3) no role for values-affective explanation
s (i.e., Jackman, 1978). Results support the fairness heuristic hypoth
esis-subjective assessments of fairness play a mediating role between
personal values and support for affirmative action. These results indi
cate that values play a significant role in determining support for af
firmative action. To more fully understand how people reason about aff
irmative action, however, values research must be yoked with justice r
esearch.