The Role of Context in the Communication of Uncertain Beliefs

Most decisions require an evaluation of the likelihood of events on which outcomes depend. A common mode of judgment under uncertainty is the interpretation of statements of belief expressed by others. Most previous research on the communication of uncertainty has focused on the interpretation and use of quantitative versus qualitative expressions (e.g., "90% chance" vs. "extremely likely"); in addition, a handful of articles have addressed the effects of contextual base rates on the interpretation of expressed beliefs. In this article we argue that the social, informational, motivational, and discourse context in which beliefs are constructed and statements are formulated provides myriad additional cues that influence what is expressed by speakers and what is understood by listeners. We advance a framework for organizing the six sources of information on which listeners rely (in addition to the denotation of the speaker's words) when updating beliefs under uncertainty: (a) the listener's prior beliefs an...

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