Living in a Partisan World
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Living in a Partisan World Model 1: Likelihood of polarization as a function of party bias (100 users) How does party affiliation influence opinion formation? Two models : 1.Party affiliation is the main criterion when evaluating others opinion 2.Party affiliation only reflects like-mindedness of party members, and evaluation of others opinions depends on their views on selected core issues The outcomes : • Polarized outcomes are the norm under model 1 – A threshold effect that arises even under slight party bias • Intra-party opinion diversity is preserved even in the presence of a strong party bias – Three different types of opinion equilibria that all allow for opinion diversity • The result holds under a broad range of conditions – Presence of “independents” – Presence of “zealots” – Full or random (Erdös-Rényi) graph of party influence [1] M. H. Afrasiabi, R. Guérin, and S. Venkatesh, “Opinion Formation in Ising Networks.” Proc. ITA 2013 Workshop, San Diego, CA, February 2013. [2] M. H. Afrasiabi, R. Guérin, and S. Venkatesh, “Spin glasses with attitude: opinion formation in a partisan Erdös-Rényi world.” Proc. ITA 2014 Workshop, San Diego, CA, February 2013. Model 2: Frequency of convergence to different equilibria as a function of party bias (30 users)
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Living in a Partisan World. [1] M. H. Afrasiabi , R. Guérin , and S. Venkatesh , “Opinion Formation in Ising Networks.” Proc. ITA 2013 Workshop, San Diego, CA, February 2013. - PowerPoint PPT Presentation
Transcript of Living in a Partisan World
Living in a Partisan World
Model 1: Likelihood of polarization as a function of party bias (100 users)How does party affiliation influence opinion formation?
Two models:
1. Party affiliation is the main criterion when evaluating others opinion
2. Party affiliation only reflects like-mindedness of party members, and evaluation of others opinions depends on their views on selected core issues
The outcomes:
• Polarized outcomes are the norm under model 1– A threshold effect that arises even under slight party bias
• Intra-party opinion diversity is preserved even in the presence of a strong party bias– Three different types of opinion equilibria that all allow for
opinion diversity
• The result holds under a broad range of conditions– Presence of “independents”
– Presence of “zealots”
– Full or random (Erdös-Rényi) graph of party influence
[1] M. H. Afrasiabi, R. Guérin, and S. Venkatesh, “Opinion Formation in Ising Networks.” Proc. ITA 2013 Workshop, San Diego, CA, February 2013.[2] M. H. Afrasiabi, R. Guérin, and S. Venkatesh, “Spin glasses with attitude: opinion formation in a partisan Erdös-Rényi world.” Proc. ITA 2014 Workshop, San Diego, CA, February 2013.
Model 2: Frequency of convergence to different equilibria as a function of party bias (30 users)
