The Facebook Data Science group that experimented on user emotions until recently operated with few boundaries and little oversight.
Until recently, the Data Science group operated with few boundaries, according to a former member of the team and outside researchers. At a university, researchers likely would have been required to obtain consent from participants in such a study. But Facebook relied on users’ agreement to its Terms of Service, which at the time said data could be used to improve Facebook’s products. Those terms now say that user data may be used for research.