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Dworczak, Piotr and Smolin, Alex
(2026)
Robust Trust.
TSE Working Paper, n. 26-1709, Toulouse
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Abstract
An agent chooses an action using her private information combined with recommendations from an informed but potentially misaligned adviser. With a known alignment probability, the adviser reports his signal truthfully; with remaining probability, the adviser can send an arbitrary message. We characterize the decision rule that maximizes the agent’s worst-case expected payoff. Every optimal rule admits a trust region representation in belief space: advice is taken at face value when it induces a posterior within the trust region; otherwise, the agent acts as if the posterior were on the trust region’s boundary. We derive thresholds on the alignment probability above which the adviser’s presence strictly benefits the agent and fully characterize the solution in binary-state as well as binary-action environments.
| Item Type: | Monograph (Working Paper) |
|---|---|
| Language: | English |
| Date: | February 2026 |
| Place of Publication: | Toulouse |
| Uncontrolled Keywords: | information design, misalignment, human-AI interactions |
| JEL Classification: | C72 - Noncooperative Games D81 - Criteria for Decision-Making under Risk and Uncertainty D83 - Search; Learning; Information and Knowledge; Communication; Belief |
| Subjects: | B- ECONOMIE ET FINANCE |
| Divisions: | TSE-R (Toulouse) |
| Institution: | Université Toulouse 1 Capitole |
| Ecole doctorale: | Toulouse School of Economics (Toulouse) |
| Site: | UT1 |
| Date Deposited: | 11 Feb 2026 10:29 |
| Last Modified: | 12 Feb 2026 07:40 |
| OAI Identifier: | oai:tse-fr.eu:131429 |
| URI: | https://publications.ut-capitole.fr/id/eprint/52047 |
