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Social selection and peer influence in an online social network

Source: JournalistsResource.org

Two friends tend to have more in common than two random individuals. But do friends shape our preferences in movies, music and books, or do we select friends who share our tastes? Past research was often not able to adequately track social relationships and tastes over a period of time. In the last few years, however, platforms such as Facebook have provided researchers with tools to investigate friendship dynamics over time.

How much has our media ecosystem really been democratized? Research on viral effects, social media and news

Source: JournalistsResource.org

During much of the second half of the 20th century, Americans got their news and civic information primarily through a few dominant sources, usually a newspaper that had a relative monopoly on local information and one of three major television networks. With the rise of the Web, there was a sense that things were changing, and many hoped that citizens would be better informed by a broader, richer and more representative and democratic array of media streams. The number of “filters” would vastly expand.