The aim of the present research was to show that collective rituals have the potential to promote not only ingroup favoritism but also outgroup discrimination. In two studies, I used a minimal group setup and had participants engage in a lab-created ritual over the course of seven days. Afterwards, participants came into the lab and performed the actions in their ‘minimal’ group. In Study 1, I found that participants who performed the ad-hoc ritual distrusted outgroup members significantly more than did the control participants. Study 2 extended these findings by looking at ritual intensity as a factor of intergroup bias. Results showed, again, that participants in the two experimental conditions – elaborate and simple ritual – showed greater outgroup discrimination compared to the control, though the data showed no difference in biases between the two experimental conditions. I also found that tolerance to ambiguity moderated the effect of condition on intergroup bias.

The aim of the present research was to show that collective rituals have the potential to promote not only ingroup favoritism but also outgroup discrimination. In two studies, I used a minimal group setup and had participants engage in a lab-created ritual over the course of seven days. Afterwards, participants came into the lab and performed the actions in their ‘minimal’ group. In Study 1, I found that participants who performed the ad-hoc ritual distrusted outgroup members significantly more than did the control participants. Study 2 extended these findings by looking at ritual intensity as a factor of intergroup bias. Results showed, again, that participants in the two experimental conditions – elaborate and simple ritual – showed greater outgroup discrimination compared to the control, though the data showed no difference in biases between the two experimental conditions. I also found that tolerance to ambiguity moderated the effect of condition on intergroup bias.

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