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Decisions Under Risk are Decisions Under Complexity

Oprea, Ryan (November 2024, American Economic Review)

This paper is forthcoming at the American Economic Review.
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Free, publicly-accessible full text available November 11, 2025
Seeing What is Representative

https://doi.org/10.1093/qje/qjad020

Esponda, Ignacio; Oprea, Ryan; Yuksel, Sevgi (January 2023, The Quarterly journal of economics)

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Complexity and Procedural Choice

https://doi.org/10.1257/mic.20210032

Banovetz, James; Oprea, Ryan (January 2023, American economic journal Microeconomics)

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Confidence, Self-selection and Bias in the Aggregate

Enke, Benjamin; Graeber, Thomas; Oprea, Ryan (January 2023, American economic review)

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What Makes a Rule Complex

https://doi.org/10.1257/aer.20191717

Oprea, Ryan (December 2021, American economic review)

We study the complexity of rules by paying experimental subjects to implement a series of algorithms and then eliciting their willingness-to-pay to avoid implementing them again in the future. The design allows us to examine hypotheses from the theoretical “automata” literature about the characteristics of rules that generate complexity costs. We find substantial aversion to complexity and a number of regularities in the characteristics of rules that make them complex and costly for subjects. Experience with a rule, the way a rule is represented, and the context in which a rule is implemented (mentally versus physically) also influence complexity.
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