Disgusting microbes: The effect of disgust on perceptions of risks related to modifying microbiomes.

Research on perceived risks of scientific issues has largely overlooked the influence of disgust as a predictor. Here, we examine the impact of disgust on perceived risks of modifying microbiomes using a 2 (emotion) × 2 (focus) experiment embedded in an online survey. We find evidence of moderated mediation where individuals exposed to an article about microbiome research and therapies with explicit references to disgusting stimuli perceived greater risk through a mediating variable, elicited disgust. This indirect effect is moderated by the focus of the article; those who viewed a human-focused article experienced greater disgust and reported greater perceived risks. These findings have implications for assessing and addressing lay audiences' reactions to an emerging issue that has significant societal implications.