(EN) Breton Brotherton, Towards a definition of 'conspiracy theory (PDF), in PsyPAG Quarterly, vol. 88, 2013, pp. 9–14. URL consultato il 3 settembre 2021.
«A conspiracy theory is not merely one candidate explanation among other equally plausible alternatives. Rather, the label refers to a claim which runs counter to a more plausible and widely accepted account...[Conspiratorial beliefs are] invariably at odds with the mainstream consensus among scientists, historians, or other legitimate judges of the claim's veracity»