This paper examines from a cognitive perspective the rhetorical and epistemic advantages that can be gained from the use of (extended) metaphors in political discourse. We defend the assumption that extended metaphors can be argumentatively exploited, and provide two arguments in support of the claim. First, considering that each instantiation of the metaphorical mapping in the text may function as a confirmation of the overall relevance of the main core mapping, we argue that extended metaphors carry self-validating claims that increase (...) the chances of their content being accepted. Second, we show how the recognition of an extended metaphor’s sophistication and relevance (on behalf of the addressee) can benefit the speaker’s perceived competence (ethos). We then assess whether these two arguments measure against the dual epistemic monitoring postulated in the notion of epistemic vigilance (i.e., assessment of the source of a message and assessment of the message) and conclude that extended metaphors may fulfil the requirements of epistemic vigilance and lead to the stabilisation of a belief. We illustrate our account with an analysis of the extended metaphor of the USA as an empire found in a political pamphlet written by the Swiss politician Oskar Freysinger. (shrink)

This paper deals with the argumentative biases Conspiracy Theories typically suffer from and pursues two goals: the identification of recurring argumentative and rhetorical features of conspiracy theories, which translates into an attempt to elaborate their argumentative profile ; the elaboration of a cognitively-grounded account of CTs in terms of their persuasiveness. To fulfil goal, I examine online instances of different cases of CTs. Building on the general rhetorical features of CTs identified by Byford, I elaborate a first argumentative profile surveying (...) types of arguments and argument schemes CTs are likely to rely on to specify how these “crippled epistemologies” are argumentatively biased. To fulfil goal, I use the Context Selection Constraint model, originally designed to capture deception. I examine the cognitive counterpart of the – most often fallacious – arguments found in CTs and advance cognitively motivated reasons why CTs have some prospect of being argumentatively effective. This provides an account of why CTs, while biased, can manage to persuade, that is, precisely by downplaying – or obfuscating – their bias. (shrink)

This paper advances a cognitive account of the rhetorical effectiveness of fallacious arguments and takes the example of source-related fallacies. Drawing on cognitive psychology and evolutionary linguistics, we claim that a fallacy enforces accessibility and epistemic cognitive constraints on argument processing targeted at preventing the addressee from spotting its fallaciousness, by managing to prevent or circumvent critical reactions. We address the evolutionary bases of biases and the way that these are exploited in fallacious argumentation.