Format du dépôt |
Fichier |
Type de dépôt |
Autre publication scientifique |
Titre |
en
On the design of public debate in social networks
|
Résumé |
en
We propose a model of the joint evolution of opinions and social relationships in a setting where social influence decays over time. The dynamics are based on bounded confidence: social connections between individuals with distant opinions are severed while new connections are formed between individuals with similar opinions. Our model naturally gives raise to strong diversity, i.e., the persistence of heterogeneous opinions in connected societies, a phenomenon that most existing models fail to capture. the intensity of social interactions is the key parameter that governs the dynamics. First, it determines the asymptotic distributionn of opinions. In particular, increasing the intensity of social interactions brings society closer to consensus. Second, it determines the risk of polariztion, which is shown to increase with the intensity of social interactions. Our results allow to frame the problem of the design of public debates in a formal setting. We hence characterize the optimal strategy for a social planner who controls the intensity of the public debate and thus faces a trade-off between the pursuit of social consensus and the risk of polarization. We also consider applications to political campaigning and show that both minority and majority candidates can have incentives to lead society towards polarization.
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Auteur(s)
|
Michel Grabisch
1, 2, 3
, Antoine Mandel
1, 2, 3
, Agnieszka Rusinowska
1, 4, 3
1
CES -
Centre d'économie de la Sorbonne
( 15080 )
- Maison des Sciences Économiques - 106-112 Boulevard de l'Hôpital - 75647 Paris Cedex 13
- France
-
Université Paris 1 Panthéon-Sorbonne UMR8174 ( 7550 )
;
-
Centre National de la Recherche Scientifique UMR8174 ( 441569 )
2
UP1 -
Université Paris 1 Panthéon-Sorbonne
( 7550 )
- 12 place du Panthéon, 75231 Paris Cedex 05
- France
3
PSE -
Paris School of Economics
( 301309 )
- 48 boulevard Jourdan 75014 Paris
- France
-
Université Paris 1 Panthéon-Sorbonne ( 7550 )
;
-
École normale supérieure - Paris ( 59704 )
;
-
Université Paris Sciences et Lettres ( 564132 )
;
-
École des hautes études en sciences sociales ( 99539 )
;
-
École des Ponts ParisTech ( 301545 )
;
-
Centre National de la Recherche Scientifique ( 441569 )
;
-
Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement ( 577435 )
4
CNRS -
Centre National de la Recherche Scientifique
( 441569 )
- France
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Date de publication |
2022-01
|
Description |
Documents de travail du Centre d'Economie de la Sorbonne 2022.01 - ISSN : 1955-611X
|
Licence |
Paternité
|
Commentaire |
Domaine(s) |
-
Sciences de l'Homme et Société/Economies et finances
|
Éditeur scientifique |
-
Centre d'Economie de la Sorbonne - CES UMR 8174
|
Mots-clés (JEL) |
-
C - Mathematical and Quantitative Methods/C.C6 - Mathematical Methods • Programming Models • Mathematical and Simulation Modeling/C.C6.C65 - Miscellaneous Mathematical Tools
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D - Microeconomics/D.D8 - Information, Knowledge, and Uncertainty/D.D8.D83 - Search • Learning • Information and Knowledge • Communication • Belief • Unawareness
-
D - Microeconomics/D.D8 - Information, Knowledge, and Uncertainty/D.D8.D85 - Network Formation and Analysis: Theory
|
Référence interne |
|
Voir aussi |
-
https://doi.org/10.1287/opre.2022.2356
|
Mots-clés |
en
opinion dynamics, network formation, network fragility, polarization, institution design, political campaign
|