I argue that a general feature of human psychology provides strong reason to modify or reject anti-reductionism about the epistemology of testimony. Because of the work of what I call “the background” (which is a collection of all of an individual's synthetizations, summarizations, memories of experiences, beliefs, etc.) we cannot help but form testimonial beliefs on the basis of a testifier's say so along with additional evidence, concepts, beliefs, and so on. Given that we arrive at testimonial beliefs through the work of the background, to be justified in holding a testimonial belief, we must not only have a rational speaker's say so, but we must also form such beliefs in a right way. If this is right, then, contrary to typical anti-reductionism, justified testimonial beliefs require more than just a trustworthy testifier's say so – another requirement is that they are formed in a right way.

Evidentialism says that a subject S’s justification is entirely determined by S’s evidence. The plausibility of evidentialism depends on (1) what kind of entities constitute a subject S’s evidence and (2) what one takes the support relation to consist in. Conee and Feldman’s mainstream evidentialism (ME) incorporates a psychologist answer to (1) and an explanationist answer to (2). ME naturally accommodates perceptual justification. However, it does not accommodate intuitive cases of inferential justification. In the second part of the paper, I consider and reject a reply based on a refined explanationist theory of the support relation proposed by K McCain.