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Optimal investment in social signals

Jean-Louis Dessalles 1, 2 
1 DIG - Data, Intelligence and Graphs
LTCI - Laboratoire Traitement et Communication de l'Information
Abstract : This study is an attempt to determine how much individuals should invest in social communication, depending on the type of relationships they may form. Two simple models of social relationships are considered. In bothmodels, individuals emit costly signals to advertise their “quality” as potential friends. Relationships are asymmetrical or symmetrical. In the asymmetrical condition (first model), we observe that low-quality individuals are discouraged from signaling. In the symmetrical condition (second model), all individuals invest in communication. In both models, high-quality individuals (elite) do not compete and signal uniformly. The level of this uniform signal and the size of the “elite” turn out to be controlled by the accuracy of signals. The two models may be relevant to several aspects of animal and human social communication.
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Submitted on : Friday, September 13, 2019 - 4:22:35 PM
Last modification on : Tuesday, October 19, 2021 - 11:14:15 AM

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Jean-Louis Dessalles. Optimal investment in social signals. Evolution, 2014, 68 (6), pp.1640-1650. ⟨10.1111/evo.12378⟩. ⟨hal-02286932⟩



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