Information Inundation on Platforms and Implications

Gad Allon (), Kimon Drakopoulos () and Vahideh Manshadi ()
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Gad Allon: Wharton School, University of Pennsylvania, Philadelphia, Pennsylvania 19104
Kimon Drakopoulos: Marshall School of Business, University of Southern California, Los Angeles, California 90089
Vahideh Manshadi: Yale School of Management, Yale University, New Haven, Connecticut 06511

Operations Research, 2021, vol. 69, issue 6, 1784-1804

Abstract: In this paper, we study a model of information consumption in which consumers sequentially interact with a platform that offers a menu of signals (posts) about an underlying state of the world (fact). At each time, incapable of consuming all posts, consumers screen the posts and only select (and consume) one from the offered menu. We show that, in the presence of uncertainty about the accuracy of these posts and as the number of posts increases, adverse effects, such as slow learning and polarization, arise. Specifically, we establish that, in this setting, bias emerges as a consequence of the consumer’s screening process. Namely, consumers, in their quest to choose the post that reduces their uncertainty about the state of the world, choose to consume the post that is closest to their own beliefs. We study the evolution of beliefs, and we show that such a screening bias slows down the learning process and that the speed of learning decreases with the menu size. Further, we show that the society becomes polarized during the prolonged learning process even in situations in which the society’s belief distribution was not a priori polarized.

Keywords: information platforms; Bayesian learning; opinion dynamics; polarization (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:inm:oropre:v:69:y:2021:i:6:p:1784-1804

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