Social Choice Theory

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[Revised entry by Christian List on October 14, 2022.
Changes to: Main text, Bibliography, notes.html]
Social choice theory is the study of collective decision procedures and mechanisms. It is not a single theory, but a cluster of models and results concerning the aggregation of individual inputs (e.g., votes, preferences, judgments, welfare) into collective outputs (e.g., collective decisions, preferences, judgments, welfare). Central questions are: How can a group of individuals choose a winning outcome (e.g., policy, electoral candidate) from a given set of options? What are the properties of different voting systems? When is a voting…

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