Fabrizio Cariani
Assistant Professor
Email: f-cariani@northwestern.edu

Fabrizio Cariani (PhD, UC Berkeley, Logic and the Methodology of Science, 2009) has primary interests in philosophy of language, philosophical logic and epistemology. Particular projects focus on modality (especially deontic modality), judgment aggregation and epistemic rationality. He also maintains strong research interests in philosophy of mathematics, philosophy of probability and decision theory.
Work:
Papers:
Decision Framing in Judgment Aggregation. (with Marc Pauly and Josh Snyder), Synthese, 163, pp. 1–24, 2008.
Judgment aggregation problems are language dependent in that they may be framed in different yet equivalent ways. We formalize this dependence via the notion of translation invariance, adopted from the philosophy of science, and we argue for the normative desirability of translation invariance. We characterize the class of translation invariant aggregation functions in the canonical judgment aggregation model, which requires collective judgments to be complete. Since there are reasonable translation invariant aggregation functions, our result can be viewed as a possibility theorem. At the same time, we show that translation invariance does have certain normatively undesirable consequences (e.g. failure of anonymity). We present a way of circum- venting them by moving to a more general model of judgment aggregation, one that allows for incomplete collective judgments.
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