Beneficial and detrimental correlates of interpersonal disagreement have been postulated and documented. The conclusion: conflict is both bad and good. The evidence for these paradoxical effects is summarized. In this article, we argue that the consequences of conflict for individuals depend on its frequency, the way in which it is managed, and the quality of the relationship in which it arises. Non-linear patterns of association are hypothesized such that constructive conflicts, particularly those arising in supportive relationships, should (up to a limit) predict more beneficial and fewer detrimental outcomes. In contrast, coercive conflicts, particularly those arising in unsupportive relationships, should predict more adverse and fewer favorable outcomes.