Apocalypticism is the belief in an impending large-scale catastrophic event that would threaten the survival of the human race. Despite the high level of apocalypticism among American adults, there has been little empirical research conducted to determine whether this proclivity is socially consequential. Conspiracism, a related factor, is widely studied empirically and is associated with many negative societal effects. Though research suggests a possible correlation between these variables, empirical research has not examined whether apocalypticism is a robust predictor of conspiracism. I hypothesize and test whether apocalypticism is predictive of belief in conspiracy theories using data from the 2018 Chapman Survey of American Fears, a nationally representative sample of American adults. From this data a multi-item conspiracism index was created and analyzed in relation with a measure of belief in apocalypticism. Regression analyses show that apocalyptic belief is the strongest predictor of conspiracism within the model, surpassing sociodemographic, political and religious characteristics. These results demonstrate that apocalypticism is an important factor to consider when studying conspiracism, and suggests that future researchers should further investigate apocalypticism using a variety of social scientific methods.

Du 11 septembre aux extraterrestres, des camps de concentration américains à l'assassinat de Kennedy, cette thèse a pour objectif d'éclairer sous un angle sociopolitique les fondements, les mécanismes et les enjeux de la pensée conspirationniste aux États-Unis depuis la révolution jusqu'à nos jours. S'il ne s'agit pas de dresser un catalogue exhaustif de toutes les théories du complot en vogue, le but demeure de démontrer que le conspirationnisme est un véritable fait social aux États-Unis, un élément de culture politique et populaire. Cette thèse se propose alors d'étudier les rouages et les origines du conspirationnisme sous trois aspects différents et complémentaires qui forment un triangle. D'abord, sous l'angle factuel, c'est-à-dire en étudiant les thèses du complot relatives à un événement extraordinaire (9/11, assassinat de JFK, etc.). Ensuite, sous l'angle des acteurs du conspirationnisme : les leaders conspirationnistes (LaRouche, Icke, etc.), les citoyens enquêteurs et les boucs-émissaires (communistes, juifs, illuminatis, etc.). Enfin, sous l'angle culturel en mettant en perspective le conspirationnisme avec la culture américaine : l'anti-étatisme, la présence de mafias ou encore le cinéma de masse. / From 9/11 to UFOs, from American concentration camps to the Kennedy's assassination, this dissertation aims to enlighten, through a sociopolitical analysis, the grounds, the mechanics and the goals of the conspiratorial thought in the United States since the Revolution. Even Though it is no question to draw an exhaustive catalog of each and every conspiracy theory, I would stress that conspiracism is part of the American political and popular culture. Then, this dissertation studies the origins and the developments of conspiracism through three complementary focuses. First, a factual approach which dwells on specific conspiracy theories such as the 9/11 attacks or the assassination of Kennedy. Secondly, I will come on the actors of conspiracism : the conspiracist leaders (LaRouche, Icke) the citizens sleuths and the scapegoats (Communists, Jews, Illuminatis). Finally, under a cultural angle, I will outlook conspiracism and the American culture of anti-statism, the presence of mafias or the role of mass-medias.

This paper deals with the anti-Semitic pamphlet The Protocols of the Elders of Zion, which is placed in the historical context of its origin, considering political and social causes behind the formulation of many previous conspiracy theories and anti-Jewish narratives and their motifs, which are eventually reflected in The Protocols. This complex conspiracy narrative is then subjected to structural analysis, which seeks to identify dominant themes structured into binary oppositions, through which it aims to capture a potential "meaning" or significance of the narrative that was relevant to readers of its time but also addresses contemporary conspiracy theorists. Finally, the work attempts to outline one of the root causes that makes Jews ideal adepts for a major role as conspirators in conspiracy narratives, that lies in their extraordinary, liminal state, defined by their relationship to the majority, in this case, Christian society.

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