Filter by author: Rainer Bromme

In this essay, we draw on the existing literature to discuss the roles for emotions in science communication. There is a widespread perception that emotions are detrimental to quality, particularly as a threat to the objectivity of science. This paper challenges this view by discussing the potential positive and negative effects of emotions on both the producers and recipients of science communication. Additionally, we outline the motivational and heuristic functions of emotions. Finally, we consider the place and roles for emotions in different models of science communication. The essay aims to support both producers and recipients of science communication in reflecting on their own emotions and the emotions of their counterpart.

AI-based chatbots offer new opportunities for communicating science-based information, but often fall short of established standards. We conducted two pre-registered experiments examining user perceptions of an AI-based chatbot providing information on nanoparticles in sunscreen. Study one (N = 508) tested whether a disclaimer about the chatbot's uncertain training data affected perceived source trustworthiness and information credibility. The results showed no significant effect of the disclaimer; perceptions were primarily influenced by users' prior attitudes. Study two (N = 1059) tested the evaluation of information on nanoparticles in sunscreen in an experiment with a 2 (source: scientist vs. AI-based chatbot) ×2 (presentation: static vs. dynamic) between-subjects design. The study showed that the scientist was evaluated as more trustworthy and the provided information seen as more credible compared to the AI-based chatbot. The two studies highlight the relevance of perceived objectivity in science and health communication, whether executed by humans or machines.