Searching for Information*

Jungsuk Han and Francesco Sangiorgi

No 300, Working Paper Series from Sveriges Riksbank (Central Bank of Sweden)

Abstract: This paper provides a microfounded information acquisition technology based on a simple framework with information search. When searchable information is limited, an agent encounters increasingly more redundant information in his search for new information. Redundancy slows down the learning process and generates decreasing returns. Further- more, as multiple agents search for information from the same source, limited searchabil- ity leads to covariance as the acquired information becomes increasingly more overlapped among agents. Using an asymptotic approach, we construct a tractable mapping from resource (attention) allocations to the precision and the correlation of agents’information under varying degrees of searchability of information. We study two economic applica- tions with endogenous information acquisition using our model: (i) a “beauty contest” coordination game, and (ii) a noisy rational expectations equilibrium.

Keywords: information processing; concavity; precision; asymptotic analysis; coordina- tion games; portfolio choice; …nancial equilibrium (search for similar items in EconPapers)
JEL-codes: C65 D80 D81 D83 G11 G14 (search for similar items in EconPapers)
Pages: 72 pages
Date: 2015-05-01
New Economics Papers: this item is included in nep-cmp, nep-gth and nep-mic
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Journal Article: Searching for information (2018)
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