Echo Chamber Formation (IMAGE) Dartmouth College Caption Retweet networks of the 2016 US presidential debates show the rise of echo chambers for Donald Trump (red) and Hillary Clinton (blue) that gradually absorb undecided voters (yellow) across the three debates. Credit Courtesy Fu Lab/Dartmouth College Usage Restrictions Courtesy Fu Lab/Dartmouth College License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.