This research is part of the "Trust in Science and Science-Related Populism Many Labs Study" (TISP) initiative. The primary questionnaire will be distributed in many countries; the details are available here: https://projects.iq.harvard.edu/manylabstrustinscience. However, we have added several additional questions and this pre-registration is concerned with these measures. Specifically, we focus on the perception of instrumentality of different sources of knowledge and epistemic conflict between science and other sources of knowledge.