Facebook under fire over 'creepy' secret study | Bangkok Post: news

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Facebook under fire over 'creepy' secret study

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Facebook secretly manipulated the feelings of 700,000 users to understand "emotional contagion" in a study that prompted anger and forced the social network giant on the defensive. 

The researchers wanted to see if the number of positive, or negative, words in messages they read on Facebook affected whether users then posted positive or negative content in their status updates

For one week in 2012, Facebook tampered with the algorithm used to place posts into users' news feeds to study how this affected their mood, all without their explicit consent or knowledge.

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