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Colour-coded decisions: an experiment on case-based decision theory

Published online by Cambridge University Press:  01 January 2025

Benjamin Radoc*
Affiliation:
Department of Economics, Ateneo de Manila University, Quezon City, Philippines BSP Research Academy, Bangko Sentral ng Pilipinas, Manila, Philippines

Abstract

Decision makers typically possess limited knowledge on states of the world so that use of information from past similar experiences is reasonable. This analogical thinking is formalised by case-based decision theory (CBDT). We created a novel experimental setting to validate the predictive power of CBDT versus Bayesian reasoning. Participants encountered a salient but irrelevant cue which a Bayesian decision maker is likely to ignore but a case-based decision maker may use in assessing similarity. We find that although the irrelevant similarity cue was used, the pattern in participants’ decisions is neither case-based nor Bayesian. The results suggest that CBDT does not apply in simple decision settings where similarity cues are uninformative.

Information

Type
Original Paper
Copyright
Copyright © The Author(s), under exclusive licence to Economic Science Association 2024.

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