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Regulating an agent with different beliefs

  • Author(s): Salanie, Francois
  • Treich, Nicolas
  • et al.
Abstract

There is some evidence that people have biased perceptions of risks, such as lethal or environmental risks. Hence their behavior is based on beliefs which may di¤er from the ’objective’ beliefs used by a regulator. The optimal regulation then depends on this di¤erence in beliefs. We set up a general framework and study this policy change. It turns out that, in many situations, the policy change depends on the absolute ’distance’ between beliefs, and not on whether agents over-estimate or under-estimate risks. We characterize the necessary and su¢cient condition for ’more distant’ beliefs to always reduce the regulator’s decision. We apply and extend that condition in several ways.

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