A Proof of Blackwell's Theorem
Résumé
This note gives a new proof of Blackwell’s celebrated result. The result is a bit stronger than the classical version since the action set and the prior are fixed, and only the utility of the decision maker varies. I show directly that a decision maker has access to a larger set of joint distributions over actions and states of the world if and only if her information improves in the garbling order.
Domaines
Economies et finances
Fichier principal
2017-eduardo-richet-perez-proof-of-blackwell-s-theorem.pdf (179.86 Ko)
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