When we learn that someone holds irrational beliefs, we often respond by reducing our epistemic trust in them. In this paper, I will propose a novel account of such trust reductions. The recently popular relationship-modification account (RMA) of epistemic blame will serve as a foil for this project. RMA says that epistemically blaming others for their epistemic failings involves modifying our epistemic relationships with them, paradigmatically via a reduction of epistemic trust. RMA has recently faced two challenges of extensional inadequacy, which I will show result from a mistaken view about what type of response trust reductions are. I will draw on resources from legal theory to show that trust reductions bear all the hallmarks of so-called non-punitive measures, which serve preventative collective purposes. I will argue for an account of trust reductions as non-punitive epistemic measures that serve the purpose of preventing unreliable informants from negatively affecting the epistemic commons. My account explains when and why it is appropriate to reduce epistemic trust and shows where RMA goes wrong.
