PERCEPTION-THEORETIC FOUNDATIONS OF WEIGHTED UTILITARIANISM

• 成果类型: Article
• 署名作者: Argenziano, Rossella; Gilboa, Itzhak
• 署名单位: University of Essex; Universite Paris Saclay; Hautes Etudes Commerciales (HEC) Paris; Tel Aviv University
• 刊物名称: ECONOMIC JOURNAL
• ISSN/ISSBN: 0013-0133
• DOI: 10.1111/ecoj.12622
• 发表日期: 2019
• 页码: 1511-1528
• 关键词: Welfare; utility; semiorders; aggregation; RISK

摘要

We provide a microfoundation for a weighted utilitarian social welfare function that reflects common moral intuitions about interpersonal comparisons of utilities. If utility is only ordinal in the usual microeconomic sense, interpersonal comparisons are meaningless. Nonetheless, economics often adopt utilitarian welfare functions, assuming that comparable utility functions can be calibrated, using information beyond consumer choice data. We show that consumer choice data alone are sufficient. As suggested by Edgeworth (1881), just noticeable differences (JNDs) provide a common unit of measure for interpersonal comparisons of utility differences. We prove that a simple monotonicity axiom implies a weighted utilitarian aggregation of preferences, with weights proportional to individual JNDs.