The assurance view of testimony

This essay critically examines the Assurance View of testimony as put forth by Angus Ross (1986) and Richard Moran (1999). The Assurance View holds that someone who offers testimony gives the hearer a non-evidential justification for belief by assuming responsibility for the truth of her testimony. I agree that testimonial justification depends on the teller’s assumption of her responsibility for her testimony, but argue that it is nevertheless evidential justification. Testimonial justification is a sort of evidence that is within the teller’s power to create or withhold at will, and that power is essential to the justification.