When is a person justified in believing a proposition? In this paper, I defend a view according to which a person is justified in believing a proposition just in case the person’s evidence sufficiently supports the proposition and the person responsibly acquired and sustained the evidence that supports the proposition. This view overcomes a deficiency in a prominent theory of epistemic justification. As championed by Earl Conee and Richard Feldman, Evidentialism is a theory subject to counterexamples at the hands of (...) cases involving epistemic irresponsibility. I critically discuss such a case as put forward by Jason Baehr. After providing an argument that clarifies why the case is problematic for Evidentialism, I defend my argument from a response by Earl Conee. Then I develop a theory of epistemic justification capable of handling cases involving epistemic irresponsibility, and I defend this theory from evidentialist objections. (shrink)

In this dissertation, I argue for a new conception of the epistemic condition on moral responsibility.