Two-sided science: Communicating scientific uncertainty increases trust in scientists and donation intention by decreasing attribution of communicator bias

Previous research has shown that uncertainty communication by scientists (i. e., expressing reservations towards their own research) increases the public's trust in their work. The reasons for this have not been elucidated, however. In the present study, we provide a theoretical explanation for this phenomenon. Specifically, we expected that attributed communicator bias would mediate the effect of uncertainty communication on trust. Results from a mixed-design experiment (N = 88), using modified science news articles, revealed support for this hypothesis. Positive effects of uncertainty communication on trust and donation intention were both mediated by attributed communicator bias.