Communicators often hedge. Salespeople say that a product is probably the best, recommendation engines suggest movies they think you’ll like, and consumers say restaurants might have good service. But how does hedging impact persuasion? We suggest that different types of hedges may have different effects. Six studies support our theorizing, demonstrating that (1) the probabilistic likelihood hedges suggest and (2) whether they take a personal (vs. general) perspective both play an important role in driving persuasion. Further, the studies demonstrate that both effects are driven by a common mechanism: perceived confidence. Using hedges associated with higher likelihood, or that involve personal perspective, increases persuasion because they suggest communicators are more confident about what they are saying. This work contributes to the burgeoning literature on language in marketing, showcases how subtle linguistic features impact perceived confidence, and has clear implications for anyone trying to be more persuasive.
Professor at George Washington University
I am a Professor with Human-Technology Collaboration and Educational Technology programs at George Washington University in Washington DC. I have written 12 books and more than 100 articles, and I co-host of the Parsing Science podcast where scientists tell the stories behind their research. I am also the developer of the WeShareScience.com online platform for sharing research videos, and SciencePods.com where researchers can create free podcasts about their science. My research interests include human interactions with intelligent machines, needs, needs assessments, and instructional design.
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