Peter J. Graham is a contemporary analytic philosopher at the University of California, Riverside, specializing in epistemology and the philosophy of language. He is best known for his work on the epistemology of testimony, defending anti-reductionist and reliabilist accounts of how testimonial beliefs can be justified. His research integrates proper function theory with social epistemology to explain the normative standing of beliefs acquired through chains of testimony.
Developed a proper function-based reliabilist account of testimonial justification
Argued that testimony can generate new justification rather than merely transmit it
Contributed to debates between reductionist and anti-reductionist views of testimony
Applied teleological normativity to epistemic warrant in social contexts
Edited and contributed to foundational work in the epistemology of testimony
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