Looking for a little affirmation that people like you? You may be more likely to head to Facebook in search of “likes,” according to a new study.

People who have higher levels of activity in the part of the brain associated with rewards like food and sex when they get positive feedback are more likely to be avid Facebook users, a study by researchers at the Free University of Berlin found. The findings, published Thursday in the journal Frontiers in Human Neuroscience, indicate that a need for positive affirmation may drive people to use Facebook.