cientists have been investigating the idea of Facebook addiction for years now. In 2012, researchers from the University of Bergen conducted a first-of-its-kind study about the ways in which people develop Facebook dependency. The social nature of the site itself was considered problematic, especially for women, extroverts, and those unable to fall asleep until very late at night (people with a delayed sleep-wake rhythm), researchers said. The following year, researchers linked social media use to the reward center of the brain that's associated with preservation of our social reputation, whereas another preliminary study found compulsive Internet use may induce changes in some brain reward pathways that are similar to drug addiction.