Across four studies, we applied the cognitive model of anxiety to explicate the appraisals that elicit collective angst (i.e., concern for the in-group's future vitality). In Study 1a, consistent with the model, Québécois experienced collective angst when they appraised the following: (1) a threat as likely to harm their group, (2) a threat as severely harming their group, and (3) Québécois as not having efficacy to protect their group. In Study 1b, results were replicated in the context of the realistic threat that Islamic extremists pose to Christian-Lebanese. In Studies 2a and 2b, we manipulated the three appraisals and found a similar pattern of results in the context of a potential terrorist attack on American soil by Islamic extremists. Importantly, collective angst mediated the threat appraisal effect on (non-Muslim) Americans' prejudice towards Muslims. The utility of the appraisal model for regulating collective angst (and thus its consequences) is discussed.Group members find comfort in the belief that there exists continuity in their group's past, present, and future (Jetten & Hutchison, 2011;Jetten & Wohl, 2012;Sani et al., 2007). This is because a sense of continuity provides existential security (Durkheim, 1951). Yet, social groups are not static; they change-a reality that, when salient, is often perceived as a threat to one's social identity (Riek, Mania, & Gaertner, 2006) and thus produces distress among group members (Chandler & Lalonde, 1998;Lampinen, Odegard, & Leding, 2004). This distress may manifest in collective angst-a group-based emotion that reflects concern for the future vitality of the in-group (Jetten & Wohl, 2012;Wohl, Branscombe, & Reysen, 2010).Importantly, collective angst originates from perceived extinction threats to one's in-group. These threats may take the form of realistic extinction threats posed by adversarial out-groups (Halperin, Porat, & Wohl, 2013;Wohl et al., 2010) but may also take the form of symbolic threats to the group's social identity (e.g., loss of cultural vitality; Wohl, Giguère, Branscombe, & McVicar, 2011). Halperin et al. (2013), for example, found that Israeli Jews experienced collective angst when they were informed that Israel did not have the capability to prevent a nuclear attack from Iran. Likewise, Canadians experienced collective angst when they perceived Canadian distinctiveness from the United States was under threat (Wohl et al., 2011). Whether the threat perceived is realistic or symbolic, the consequence of collective angst is the same-an upswing in support for efforts to strengthen the ingroup (e.g., support for policies that are perceived to be in-group protective; for a review, see Lucas, Rudolph, Zhdanova, Barkho, & Weidner, 2014;Wohl, Squires, & Caouette, 2012). To date, however, little is known about the appraisals of intergroup events that are necessary to elicit collective angst. The present research addressed this gap in knowledge by applying the cognitive model of anxiety (Beck, Emery, & Greenberg, 1985;Clark & Beck, 201...