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Journal of Political Economy Vol. 130 No. 4 2022

Measuring the Completeness of Economic Models

Drew Fudenberg1; Jon Kleinberg2; Annie Liang3; Sendhil Mullainathan4

1 Massachusetts Institute of Technology · 2 Cornell University · 3 Northwestern University · 4 University of Chicago

open access

Abstract

Economic models are evaluated by testing the correctness of their predictions. We suggest an additional measure, “completeness”: the fraction of the predictable variation in the data that the model captures. We calculate the completeness of prominent models in three problems from experimental economics: assigning certainty equivalents to lotteries, predicting initial play in games, and predicting human generation of random sequences. The completeness measure reveals new insights about these models, including how much room there is for improving their predictions.

DOI
10.1086/718371
Volume
130
Issue
4
Pages
956-990
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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