Consumer preferences are complete in standard economic theory

the verdict

SUPPORTED

the evidence backs this

Recorded sources

4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Standard economic theory indeed assumes that consumer preferences are complete, meaning that consumers can always compare and rank any given bundles of goods. Retrieved literature confirms this assumption is a foundational axiom of standard microeconomic and expected utility theory.

The analysis

The retrieved papers uniformly state or rely on the fact that standard economic theory (such as neoclassical consumer choice and expected utility theory) assumes completeness as a core axiom. While some papers test or question whether this assumption holds in empirical reality (especially under uncertainty or in healthcare), they all agree that completeness is a standard theoretical assumption.

Evidence for · 4

The theory choice and of consumer demand

Recorded source metadata

David M. Kreps. The theory choice and of consumer demand. 2020. https://doi.org/10.23943/princeton/9780691202754.003.0002

Paper 1 notes that the standard model of consumer behavior assumes completeness of preferences.

Source citation format

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More for · 3

Revisiting the axiom of completeness in health care.

Recorded source metadata

Mandy Ryan, Fernando San Miguel. Revisiting the axiom of completeness in health care.. 2003. https://doi.org/10.1002/hec.730

Paper 2 discusses how experiments modeling individual preferences are based on the standard assumption of completeness.

Source citation format

Irrational Responses to Risk Preference Questionnaires by Patients with Diabetes with or without Retinopathy and Comparison with Those without Diabetes.

Recorded source metadata

Naoya Emoto, Akimi Soga, Izumi Fukuda, Kyoko Tanimura-Inagaki, Taro Harada, Hajime M Koyano, Rei Goto, Hitoshi Sugihara. Irrational Responses to Risk Preference Questionnaires by Patients with Diabetes with or without Retinopathy and Comparison with Those without Diabetes.. 2020. https://doi.org/10.2147/DMSO.S283591

Paper 4 notes that expected utility theory, which forms the basis of consumer preference modeling, assumes completeness.

Source citation format

Impact of discussion on preferences elicited in a group setting.

Recorded source metadata

Ken Stein, Julie Ratcliffe, Ali Round, Ruairidh Milne, John E Brazier. Impact of discussion on preferences elicited in a group setting.. 2006. https://doi.org/10.1186/1477-7525-4-22

Paper 6 confirms that the completeness of preferences is assumed as a core axiom of expected utility theory.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 7501 Aug 2026

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