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Sequential choice and selfreinforcing rankings

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Abstract

People's behavior is informed and influenced by other people's choices. In many online technologies, for instance, aggregate information about the choices of other individuals is encoded in the form of rankings. Such rankings, in turn, have a direct impact on people's future choices. What are the long-term dynamics of these rankings, and do the dynamics depend on specific assumptions about people's behavior? In this paper, we propose a general framework for modeling the dynamics in settings where information about peoples' past choices is recorded as a ranking and influences future choices. We find a general condition for convergence, show that it is satisfied by many important models in economics and beyond, and characterize the possible limits in terms of the choice probabilities.

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  • Pantelis P. Analytis & Francesco Cerigioni & Alexandros Gelastopoulos & Hrvoje Stojic, 2022. "Sequential choice and selfreinforcing rankings," Economics Working Papers 1819, Department of Economics and Business, Universitat Pompeu Fabra.
    • Handle: RePEc:upf:upfgen:1819
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    1. Fabrizio Germano & Vicenç Gómez & Francesco Sobbrio, 2022. "Crowding Out the Truth? A Simple Model of Misinformation, Polarization, and Meaningful Social Interactions," CESifo Working Paper Series 10011, CESifo.

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    More about this item

    Keywords

    ranking; sequential choice; social learning; social influence; inattention; herding;
    All these keywords.

    JEL classification:

    • D01 - Microeconomics - - General - - - Microeconomic Behavior: Underlying Principles
    • D11 - Microeconomics - - Household Behavior - - - Consumer Economics: Theory
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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