College students who use Facebook spend less time studying and have lower grade-point averages (GPAs) than students who have not signed up for the popular social networking site, according to a study by researchers at Ohio State University.

85% of undergraduates were Facebook users, while 52% of graduate students had accounts.

Facebook users in the study had GPAs between 3.0 and 3.5, while non-users had GPAs between 3.5 and 4.0.

Facebook users say they averaged one to five hours a week studying, while non-users studied 11 to 15 hours per week.

At the same time as the research revealed that Facebook users have lower GPAs, 79% of Facebook users in the study claimed it did not have an impact on their academic performance.