Spread of (mis)information in social networks
AbstractWe provide a model to investigate the tension between information aggregation and spread of misinformation. Individuals meet pairwise and exchange information, which is modeled as both individuals adopting the average of their pre-meeting beliefs. "Forceful" agents influence the beliefs of (some of) the other individuals they meet, but do not change their own opinions. We characterize how the presence of forceful agents interferes with information aggregation. Under the assumption that even forceful agents obtain some information from others, we first show that all beliefs converge to a stochastic consensus. Our main results quantify the extent of misinformation by providing bounds or exact results on the gap between the consensus value and the benchmark without forceful agents (where there is efficient information aggregation). The worst outcomes obtain when there are several forceful agents who update their beliefs only on the basis of information from individuals that have been influenced by them.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Bibliographic InfoArticle provided by Elsevier in its journal Games and Economic Behavior.
Volume (Year): 70 (2010)
Issue (Month): 2 (November)
Contact details of provider:
Web page: http://www.elsevier.com/locate/inca/622836
Information aggregation Learning Misinformation Social networks;
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Jeanne Hagenbach & Frédéric Koessler, 2010.
"Strategic Communication Networks,"
Review of Economic Studies,
Oxford University Press, vol. 77(3), pages 1072-1099.
- Jeanne Hagenbach & Frédéric Koessler, 2008. "Strategic communication networks," PSE Working Papers halshs-00586847, HAL.
- Jeanne Hagenbach & Frédéric Koessler, 2009. "Strategic Communication Networks," UniversitÃ© Paris1 PanthÃ©on-Sorbonne (Post-Print and Working Papers) halshs-00367692, HAL.
- Jeanne Hagenbach & Frédéric Koessler, 2009. "Strategic communication networks," Documents de travail du Centre d'Economie de la Sorbonne 09005, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
- Farrell, Joseph & Gibbons, Robert, 1989.
"Cheap Talk with Two Audiences,"
American Economic Review,
American Economic Association, vol. 79(5), pages 1214-23, December.
- Gale, Douglas & Kariv, Shachar, 2003. "Bayesian learning in social networks," Games and Economic Behavior, Elsevier, vol. 45(2), pages 329-346, November.
- Crawford, Vincent P & Sobel, Joel, 1982.
"Strategic Information Transmission,"
Econometric Society, vol. 50(6), pages 1431-51, November.
- Celen, Bogachan & Kariv, Shachar, 2004. "Observational learning under imperfect information," Games and Economic Behavior, Elsevier, vol. 47(1), pages 72-86, April.
- repec:fth:stanho:e-89-7 is not listed on IDEAS
- Daron Acemoglu & Munther A. Dahleh & Ilan Lobel & Asuman Ozdaglar, 2008.
"Bayesian Learning in Social Networks,"
NBER Working Papers
14040, National Bureau of Economic Research, Inc.
- Bala, Venkatesh & Goyal, Sanjeev, 1998.
"Learning from Neighbours,"
Review of Economic Studies,
Wiley Blackwell, vol. 65(3), pages 595-621, July.
- Bogaçhan Çelen & Shachar Kariv, 2004. "Distinguishing Informational Cascades from Herd Behavior in the Laboratory," American Economic Review, American Economic Association, vol. 94(3), pages 484-498, June.
- Ambrus, Attila & Takahashi, Satoru, 2008.
"Multi-sender cheap talk with restricted state spaces,"
Econometric Society, vol. 3(1), March.
- Takahashi, Satoru & Ambrus, Attila, 2008. "Multi-Sender Cheap Talk with Restricted State Spaces," Scholarly Articles 3200263, Harvard University Department of Economics.
- Sushil Bikhchandani & David Hirshleifer & Ivo Welch, 2010.
"A theory of Fads, Fashion, Custom and cultural change as informational Cascades,"
Levine's Working Paper Archive
1193, David K. Levine.
- Bikhchandani, Sushil & Hirshleifer, David & Welch, Ivo, 1992. "A Theory of Fads, Fashion, Custom, and Cultural Change in Informational Cascades," Journal of Political Economy, University of Chicago Press, vol. 100(5), pages 992-1026, October.
- Peter M. Demarzo & Dimitri Vayanos & Jeffrey Zwiebel, 2003.
"Persuasion Bias, Social Influence, And Unidimensional Opinions,"
The Quarterly Journal of Economics,
MIT Press, vol. 118(3), pages 909-968, August.
- Zwiebel, Jeffrey H. & Vayanos, Dimitri & DeMarzo, Peter M., 2001. "Persuasion Bias, Social Influence, and Uni-Dimensional Opinions," Research Papers 1719, Stanford University, Graduate School of Business.
- Smith, L. & Sorensen, P., 1996.
"Pathological Outcomes of Observational Learning,"
96-19, Massachusetts Institute of Technology (MIT), Department of Economics.
- Abhijit Banerjee & Drew Fudenberg, 2010.
"Word of Mouth Learning,"
Levine's Working Paper Archive
723, David K. Levine.
- Banerjee, Abhijit V, 1992. "A Simple Model of Herd Behavior," The Quarterly Journal of Economics, MIT Press, vol. 107(3), pages 797-817, August.
- Andrea Galeotti & Christian Ghiglino & Francesco Squintani, 2009. "Strategic Information Transmission in Networks," Economics Discussion Papers 668, University of Essex, Department of Economics.
- Berno Buechel & Tim Hellmann & Stefan Kloessner, 2012.
"Opinion Dynamics under Conformity,"
469, Bielefeld University, Center for Mathematical Economics.
- Büchel, Berno & Hellmann, Tim & Klößner, Stefan, 2013. "Opinion Dynamics under Conformity," Annual Conference 2013 (Duesseldorf): Competition Policy and Regulation in a Global Economic Order 79770, Verein für Socialpolitik / German Economic Association.
- Jadbabaie, Ali & Molavi, Pooya & Sandroni, Alvaro & Tahbaz-Salehi, Alireza, 2012. "Non-Bayesian social learning," Games and Economic Behavior, Elsevier, vol. 76(1), pages 210-225.
- Mueller-Frank, Manuel, 2013. "A general framework for rational learning in social networks," Theoretical Economics, Econometric Society, vol. 8(1), January.
- Manuel Förster & Ana Mauleon & Vincent Vannetelbosch, 2013.
"Trust and Manipulation in Social Networks,"
Documents de travail du Centre d'Economie de la Sorbonne
13065, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
- Manuel Förster & Ana Mauleon & Vincent Vannetelbosch, 2013. "Trust and Manipulation in Social Networks," UniversitÃ© Paris1 PanthÃ©on-Sorbonne (Post-Print and Working Papers) halshs-00881145, HAL.
- FORSTER, Manuel & MAULEON, Ana & VANNETELBOSCH, Vincent, 2013. "Trust and manipulation in social networks," CORE Discussion Papers 2013050, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Carlos Lever Guzmán, 2010. "Strategic Spending in Voting Competitions with Social Networks," Working Papers 2010-16, Banco de México.
- Yang Lu & Wing Suen & Heng Chen, 2013. "The Power of Whispers: A Theory of Rumor, Communication and Revolution," 2013 Meeting Papers 411, Society for Economic Dynamics.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Zhang, Lei).
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.