An inexpert expert

Jose A. Carrasco, Martin Carrasco, Rodrigo Yañez

Research output: Contribution to journalArticlepeer-review


We explore strategic information transmission when there is noise at the observation stage, when an expert observes signals, before he advises a policymaker. That is, the expert might be inexpert. We account for the fact that his signals might be totally uninformative, which is commonly known by players. We find that this inexpertise translates into a greater preference misalignment between players and that this yields a less informative equilibrium. We show that our results follow from the fact that the strategic effect of noise–the welfare change exclusive due to changes in the equilibrium partition–is always negative. Numerical simulations show that noise might be beneficial if the policymaker openly disagrees about noise chances. This makes the point that whether noise is beneficial or not crucially depends on how early in the game it arises, and also whether noise chances are commonly known by players or not.

Original languageEnglish
Pages (from-to)2613-2618
Number of pages6
JournalApplied Economics Letters
Issue number18
StatePublished - 2023
Externally publishedYes


  • Cheap talk
  • bias
  • informativeness
  • noise


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