Information acquisition and welfare

Luca Colombo, Gianluca Femminis, Alessandro Pavan

Research output: Contribution to journalArticlepeer-review

78 Scopus citations


We study information acquisition in a flexible framework with strategic complementarity or substitutability in actions and a rich set of externalities that are responsible for possible wedges between the equilibrium and the efficient acquisition of information. First, we relate the (in)efficiency in the acquisition of information to the (in)efficiency in the use of information and explain why efficiency in the use is no guarantee of efficiency in the acquisition. Next, we show how the acquisition of private information affects the social value of public information (i.e. the comparative statics of equilibrium welfare with respect to the quality of public information). Finally, we illustrate the implications of the results in a monetary economy with price rigidities and dispersed information about productivity shocks.

Original languageEnglish (US)
Pages (from-to)1438-1483
Number of pages46
JournalReview of Economic Studies
Issue number4
StatePublished - Oct 1 2014


  • Efficiency
  • Endogenous information
  • Externalities
  • Price-setting complementarities
  • Strategic complementarity/substitutability
  • Welfare

ASJC Scopus subject areas

  • Economics and Econometrics


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