We use the situational theory of problem solving to explicate how publics engage in conspiratorial thinking as a form of cognitive problem solving. In doing so, we develop a new typology of conspiracy theories and introduce conceptual definitions and operationalizations of conspiratorial thinking as both dispositional and situational. We conduct two survey studies which provide evidence of the measures’ reliability and validity. We also investigate the debiasing effects of relational and informational strategies employed by social institutions. Finally, we present institutional behavioral strategies, grounded in the strategic behavioral theory of communication management, that can reduce conspiratorial thinking. Our new concepts and measurement approaches describe the origins and processes of public conspiracism and provide a foundation for implementing ethical and effective interventions, ultimately contributing to a more informed and educated society.
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