Public Perceptions of Expert Credibility on Policy Issues: The Role of Expert Framing and Political Worldviews

How do individuals assess the credibility of experts in various policy domains? Under what conditions does the public interpret particular scientific knowledge claims as being trustworthy and credible? Using data collected from an online survey experiment, administered to 1,507 adult residents of Q uebec, this paper seeks answers to these questions. Specifically, we examine variation in the way members of the public perceive the credibility of scientific experts in the areas of climate change, shale gas extraction, cell phones, and wind farms. Our results contribute to the existing literatures on public perceptions of policy experts, framing, and cultural theory. We find that individuals evaluate expert credibility based on the way in which experts frame issues, and on the congruity/dissonance between these expert communication frames and one's underlying worldview. However, we also identify limits to these framing effects. Our findings shed light on the interaction of framing and political worldviews in shaping public perceptions of expert credibility in various policymaking contexts.