Facebook’s chief operating officer Sheryl Sandberg has admitted that a week-long psychological experiment affecting almost 700,000 unaware users was “poorly communicated.” As the Wall Street Journal reports, the company executive said: “This was part of ongoing research companies do to test different products, and that was what it was; it was poorly communicated. And for that communication we apologize. We never meant to upset you.” The controversial tests came to light through a_research paper. Led by data scientist Adam Kramer, a team of researchers altered the News Feed algorithm to show 689,003 users a larger percentage of either positive or...

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