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Inattentive Consumers

Ricardo Reis

No 5053, CEPR Discussion Papers from Centre for Economic Policy Research

Abstract: This paper studies the consumption decisions of agents who face costs of acquiring, absorbing and processing information. These consumers rationally choose to only sporadically update their information and re-compute their optimal consumption plans. In between updating dates, they remain inattentive. This behaviour implies that news disperses slowly throughout the population, so events have a gradual and delayed effect on aggregate consumption. The model predicts that aggregate consumption adjusts slowly to shocks, and is able to explain the excess sensitivity and excess smoothness puzzles. In addition, individual consumption is sensitive to ordinary and unexpected past news, but it is not sensitive to extraordinary or predictable events. The model further predicts that some people rationally choose to not plan, live hand-to-mouth, and save less, while other people sporadically update their plans. The longer are these plans, the more they save. Evidence using US aggregate and microeconomic data generally supports these predictions.

Keywords: Inattentiveness; Bounded rationality; Consumption; Excess sensitivity; Excess smoothness; Hand-to-mouth consumers (search for similar items in EconPapers)
JEL-codes: D1 D8 D9 E2 (search for similar items in EconPapers)
Date: 2005-05
New Economics Papers: this item is included in nep-mac and nep-mic
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (18)

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Related works:
Journal Article: Inattentive consumers (2006) Downloads
Working Paper: Inattentive Consumers (2004) Downloads
Working Paper: Inattentive Consumers (2004) Downloads
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