Friday, January 8, 2016

How Facebook Makes Us Dumber

by Cass Sunstein

Bloomberg

January 8, 2015

Why does misinformation spread so quickly on the social media? Why doesn’t it get corrected? When the truth is so easy to find, why do people accept falsehoods?

A new study focusing on Facebook users provides strong evidence that the explanation is confirmation bias: people’s tendency to seek out information that confirms their beliefs, and to ignore contrary information.

Confirmation bias turns out to play a pivotal role in the creation of online echo chambers. This finding bears on a wide range of issues, including the current presidential campaign, the acceptance of conspiracy theories and competing positions in international disputes.

The new study, led by Michela Del Vicario of Italy’s Laboratory of Computational Social Science, explores the behavior of Facebook users from 2010 to 2014. One of the study’s goals was to test a question that continues to be sharply disputed: When people are online, do they encounter opposing views, or do they create the virtual equivalent of gated communities?

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Read the study (PDF)

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