Facebook Under Fire for Psychological Experiment

The social networking site attempted to manipulate the emotions of almost 700,000 users without their knowledge.
1:43 | 06/30/14

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Transcript for Facebook Under Fire for Psychological Experiment
Well, talking about this this morning, Facebook under fire after news breaks overnight that it conducted a huge social experiment on all of us and you at home. 700,000, that's a lot of people, and bgeo in the social square. It was a whole lot of people. It was a study to see if Facebook could influence the emotional state of users on the news feed. The study was conducted in 2012. It was an attempt to test the theory they feel bad about their own live when is they see positive from others. Users are more likely to post negative content if they see negative content. And positive, you might write that, have a nice day. The researcher here, he posted an apology on Facebook right now, take a look at what he said. It's a long apology. The goal of all of our research at Facebook is to learn how to provide a better service. Our goal was never to upset anyone. But boy did they upset a whole lot of people here. I'm guessing we saw a lot of happy content on our news feeds. We post happy messages, right? They did make people upset, with negative posts, they felt negative. Full of people getting married and engaged? And you're not? I remember those days. It did affect your emotions. But jyou're married now. I became one of them. I love the long apology, in other words, we're really, really sorry. Coming up, Kerry Washington

This transcript has been automatically generated and may not be 100% accurate.

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