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Quarterly Journal of Economics Vol. 110 No. 3 1995

Case-Based Decision Theory

Itzhak Gilboa1; D. Schmeidler2,3

1 Northwestern University · 2 Tel Aviv University · 3 The Ohio State University

Abstract

This paper suggests that decision-making under uncertainty is, at least partly, case-based. We propose a model in which cases are primitive, and provide a simple axiomatization of a decision rule that chooses a “best” act based on its past performance in similar cases. Each act is evaluated by the sum of the utility levels that resulted from using this act in past cases, each weighted by the similarity of that past case to the problem at hand. The formal model of case-based decision theory naturally gives rise to the notions of satisficing decisions and aspiration levels.

DOI
10.2307/2946694
Volume
110
Issue
3
Pages
605-639
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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