Scholarly efforts to understand conspiracy theories have grown significantly in recent years, and there is now a broad and interdisciplinary literature. In reviewing this body of work, we ask three specific questions. First, what factors are associated with conspiracy beliefs? Our review of the literature shows that conspiracy beliefs result from a range of psychological, political, and social factors. Next, how are conspiracy theories communicated? Here, we explain how conspiracy theories are shared among individuals and spread through traditional and social media platforms. Next, what are the societal risks and rewards associated with conspiracy theories? By focusing on politics and science, we argue that conspiracy theories do more harm than good. We conclude by suggesting several promising avenues for future research.

Despite its ever‐present and at times escalating significance, conspiracy theory is an under‐researched topic in the social sciences. This paper analyses the political influence of conspiracy theories by drawing on semi‐structured interviews with the representatives of four major political parties from the Turkish parliament about widespread anti‐Semitic conspiracy theories regarding Dönmes (converts). The findings indicate that right‐wing political parties problematize the secret character of the Dönme community and use the conspiracy theories to express their own ontological insecurities emerging from the Sèvres syndrome. Left‐wing and liberal parties conversely dissociate themselves from the conspiratorial rhetoric. The research concludes that the political parties reject or accept the conspiracy theories rationally and in alignment with their own ontological insecurities; by doing so, they pragmatically confirm their individual ideological perspective.

This paper investigates the history of social constructions, principally conspiracy theories, about a crypto-Jewish group, the Dönmes, in Turkey. It considers the socio-political reasons for the conspiracy theories and their significance by analysing their contents in different periods. The findings suggest that the fluid identity of Dönmes makes them stranger figures, in a sociological sense, creates public mistrust and encourages conspiratorial explanations. Moreover, the study shows that the conspiracy theories surrounding Dönmes are also fed by the ontological insecurities of Turkish politics, and that conspiracy theories tend to have appeal for alienated groups during major social transformations.

What happens when a prime minister frames a momentous protest as a foreign conspiracy?The Turkish government's reaction to the Gezi Park protests, a reaction centred on a conspiracy theory about an 'interest rate lobby,' provides a unique case to explore the impacts of conspiracy theories about big-scale protests. Relying on quantitative and qualitative content analysis of online users' responses to the government's conspiracy theories, I discuss the socio-political significance of this conspiratorial rhetoric. The findings demonstrate that (1) the previous political views of online users predict their responses to conspiracy theories, and (2) the users' comments were centred on their perceptions of the government. These show that people tend to interpret the conspiracy theories in line with their political values and interests, and, accordingly, that the government's conspiratorial frames concerning the protests seem to have contributed to the political fragmentation by enhancing the division between the Justice and Progress Party (AKP) supporters and opponents.

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