#### Abstract Two preregistered studies examined whether, why, and for whom intergroup contact is associated with more egalitarian implicit racial attitudes. Performance on implicit attitude measures depends on both the activation of group-relevant evaluations (e.g., positive ingroup and negative outgroup evaluations) and the inhibition of those evaluations. We used the Quad model to estimate the contributions of spontaneous evaluation and inhibition processes in the race attitude Implicit Association Test. In large samples of White and Black Americans (total *N* = 10,000), we tested which cognitive processes were related to respondents' contact experiences and whether respondent race moderated these relationships. Results showed that intergroup contact was associated with less activation of both negative outgroup evaluations and positive ingroup evaluations, but not with the inhibition of those evaluations. Respondent race did not moderate these associations. Our findings help explain the cognitive processes by which contact experiences improve implicit attitudes in minority and majority groups.