Events at CERGE-EI

Thursday, 17 January, 2019 | 13:00 | Micro Theory Research Seminar

Ian Chadd (Job Talk) “Random Network Consideration: Theory and Experiment”

Ian Chadd

The University of Maryland, USA
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Author: Ian Chadd

Abstract: In many settings, it is natural to think of limited consideration exhibiting spillovers: attention paid to a particular alternative may "spill over" to another alternative based on shared characteristics, complementarities, features of the choice environment, etc. However, it is not straightforward whether, given choice data, a) preferences among alternatives can be revealed, or b) the network of consideration spillovers can be revealed. Using a novel laboratory experiment, I test a deterministic Network Choice model proposed in previous work and find a plethora of violations thereof, even at the individual level. I then propose a stochastic model, Random Network Choice, and analyze its properties regarding the formation of consideration sets. When applied to the laboratory data, I find considerable consistency with the general Random Network Choice model. Armed with a model of network choice consistent with my experimental data, I consider one application in the realm of advertising to show that such a generalization of so-called "positive spillovers" in attention is necessary to avoid misleading welfare analysis.
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Full Text: “Random Network Consideration: Theory and Experiment”