Effectively communicating uncertainty: The persuasive impact of different types of hedges

Abstract

Communicators often hedge. Consumers say a restaurantmighthave good mimosas or that a product isprobablythe best while Amazon suggests moviesthey thinkyou'll like. But might these different hedges have different effects on persuasion? We suggest that (1) whether a hedge takes a personal (vs. general) perspective and (2) the likelihood suggested by a hedge both play important roles in determining hedging's persuasive impact. A multi-method investigation combining experiments with machine learning of millions of online reviews supports these hypotheses. Together, they demonstrate that the effects of both hedge perspective and hedge likelihood are driven by a common mechanism: perceived confidence. Hedges that involve personal perspective or higher likelihood increase persuasion because they suggest communicators are more confident. Moreover, we demonstrate that hedging can protect communicators from backlash without sacrificing persuasive impact and highlight that brands can leverage hedging's persuasive impact when speaking through anthropomorphized agents. This work contributes to the literature on language in marketing, showcases how subtle linguistic features impact perceived confidence, and has clear implications for anyone trying to be more persuasive.