Attitude moralization in the context of collective action: How participation in collective action may foster moralization over time.

Although much is known about why people engage in collective action participation (e.g., politicized identity, group-based anger), little is known about the psychological consequences of such participation. For example, can participation in collective action facilitate attitude moralization (e.g., moralize their attitudes on the topic)? Based on the idea that collective action contexts often involve a strong social movement fighting against an immoral adversary, we propose that participating in collective action facilitates attitude moralization over time. By integrating the moralization and collective action literatures, we hypothesized that participation in collective action moralizes individuals' attitudes over time because it politicizes their identity, enrages them vis-a-vis the outgroup, and/or empowers them to achieve social change. We tested these hypotheses in a 2-year, five-wave longitudinal study (