Remember feeling unusually positive or unusually negative when on - TopicsExpress

Remember feeling unusually positive or unusually negative when on FB in January 2012? Congratulations, you were manipulated! Facebook data scientists tweaked the algorithm that determines which posts appear on users’ news feeds—specifically, researchers skewed the number of positive or negative terms seen by randomly selected users. Facebook then analyzed the future postings of those users over the course of a week to see if people responded with increased positivity or negativity of their own, thus answering the question of whether emotional states can be transmitted across a social network.

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