Herding differently: A level-k model of social learning
This paper proposes a behavioral model of social learning that unies various forms of inferential reasoning in one hierarchy of types. Iterated best responses that are based on uninformative level-0 play lead to the following of the private information (level-1), to the following of the majority (level-2), to a differentiated view on predecessors (level-3), etc. I present evidence from three sources that these are the prevalent types of reasoning in social learning: a review of social learning studies, existing data from Celen and Kariv (2004) as well as new experimental data that includes written accounts of reasoning from incentivized intra-team communication.
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