Decision theory has relatively little to say about the formal choice of priors. We pursue the issue of prior choice in a framework that builds on consumer theory. We analyze discovery decisions of a reasoner, in an environment of hypotheses with heterogeneous, subjective plausibility. We...

Where do prior beliefs come from and how do decisionmakers ascribe confidence in a theory before probabilities are available? To address these questions, we outline an axiomatic approach for selection of priors, where the reasoner is misspecification averse, and exhibits rare event...