Lack of ‘informed consent’ means that Facebook experiment on nearly 700,000 news feeds broke rules on tests on human subjects, say scientists.
The results found that users’ emotions were reinforced by what they saw – what the researchers called ‘emotional contagion’. Photograph: PA
Researchers have roundly condemned Facebook’s experiment in which it manipulated nearly 700,000 users’ news feeds to see whether it would affect their emotions, saying it breaches ethical guidelines for “informed consent”.
James Grimmelmann, professor of law at the University of Maryland, points in an extensive blog post that “Facebook didn’t give users informed consent” to allow them to decide whether to take part in the study, under US human subjects research.
“The study harmed participants,” because it changed their mood, Grimmelmann comments, adding “This is bad, even for Facebook.”
But one of the researchers, Adam Kramer, posted a lengthy defence on Facebook, saying it was carried out “because we care about the emotional impact of Facebook and the people that use our product.” He said that he and his colleagues “felt that it was important to investigate the common worry that seeing friends post positive content leads to people feeling negative or left out.”
The experiment hid certain elements from 689,003 peoples’ news feed – about 0.04% of users, or 1 in 2,500 – over the course of one week in 2012. The experiment hid “a small percentage” of emotional words from peoples’ news feeds, without their knowledge, to test what effect that had on the statuses or “Likes” that they then posted or reacted to. Continue reading