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Econometrica Vol. 77 No. 5 2009

Decision Makers as Statisticians: Diversity, Ambiguity, and Learning

Nabil I. Al-Najjar1,2,3

1 Northwestern University · 2 GfK (United States) · 3 Kellogg's (Canada)

open access

Abstract

I study individuals who use frequentist models to draw uniform inferences from independent and identically distributed data. The main contribution of this paper is to show that distinct models may be consistent with empirical evidence, even in the limit when data increases without bound. Decision makers may then hold different beliefs and interpret their environment differently even though they know each other's model and base their inferences on the same evidence. The behavior modeled here is that of rational individuals confronting an environment in which learning is hard, rather than individuals beset by cognitive limitations or behavioral biases.

DOI
10.3982/ecta7501
Volume
77
Issue
5
Pages
1371-1401
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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