Abstract
Ellsberg thought experiments and empirical confirmation of Ellsberg preferences pose serious challenges to subjective expected utility theory (SEUT). We have recently elaborated a quantum-theoretic framework for human decisions under uncertainty which satisfactorily copes with the Ellsberg paradox and other puzzles of SEUT. We apply here the quantum-theoretic framework to the Ellsberg two-urn example, showing that the paradox can be explained by assuming a state change of the conceptual entity that is the object of the decision (decision-making, or DM, entity) and representing subjective probabilities by quantum probabilities. We also model the empirical data we collected in a DM test on human participants within the theoretic framework above. The obtained results are relevant, as they provide a line to model real life, e.g., financial and medical, decisions that show the same empirical patterns as the two-urn experiment.
Original language | English |
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Pages (from-to) | 468-482 |
Number of pages | 15 |
Journal | International Journal of Theoretical Physics |
Volume | 60 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 2021 |
Keywords
- Ellsberg paradox
- Expected utility
- Quantum probability
- Quantum structures
- Uncertainty