Communication and the Emergence of a Unidimensional World

36 Pages Posted: 10 Dec 2016 Last revised: 17 May 2023

See all articles by Philippos Louis

Philippos Louis

University of Cyprus - Department of Economics

Orestis Troumpounis

Università di Padova; Lancaster University - Department of Economics

Nikolas Tsakas

University of Cyprus - Department of Economics

Date Written: May 17, 2023

Abstract

While individuals hold, exchange, and update opinions over multiple issues, opinions are often correlated and a unidimensional spectrum is enough to summarize them. But when should one expect opinions to be unidimensional? And how important is the underlying structure of communication? Our experimental results: i) validate the crisp predictions by DeMarzo et al. (2003) when individuals update their opinions on a fixed network always trusting the same neighbors, ii) jointly with simulations indicate the prevalence of unidimensionality as an expected outcome even when communication is less structured with individuals' network possibly varying over time, and iii) highlight the importance of the communication structure in predicting whether individuals hold relatively moderate or extreme opinions.

Keywords: opinion dynamics, information aggregation, persuasion bias, social networks

JEL Classification: D83, D85

Suggested Citation

Louis, Philippos and Troumpounis, Orestis and Tsakas, Nikolas, Communication and the Emergence of a Unidimensional World (May 17, 2023). Available at SSRN: https://ssrn.com/abstract=2883024 or http://dx.doi.org/10.2139/ssrn.2883024

Philippos Louis (Contact Author)

University of Cyprus - Department of Economics ( email )

75 Kallipoleos Street
P.O. Box 20537
1678 Nicosia
Cyprus

Orestis Troumpounis

Università di Padova ( email )

Lancaster University - Department of Economics ( email )

Lancaster LA1 4YX, LA1 4YX
United Kingdom

Nikolas Tsakas

University of Cyprus - Department of Economics ( email )

75 Kallipoleos Street
P.O. Box 20537
1678 Nicosia
Cyprus

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
236
Abstract Views
1,296
Rank
245,554
PlumX Metrics