Instagram is the most popular social media photo-sharing app and has been credited for making careers of artists who share their work – whether it be makeup, paintings, or photography – on the platform. But when it comes to demographics, researchers have recently found that teens and adults use the app very differently.

Researchers at Penn State’s College of Information Sciences and Technology (IST) investigated 27,000 teens and adults who use Instagram and their motivations for using the photo-sharing app. The researchers categorized subjects between the ages of 13 and 19 to be teens and those between 25 and 39 to be adults.

Using an application programming interface, the investigators found that teens use Instagram as an outlet of expression and are fixated on posting photos that garner attention. “We found that teens have much higher levels of self-disclosure on the Internet,” said Patrick Shih, a research associate at the College of IST, in a statement.

Other discrepancies found by Shih and fellow doctoral student Kyungsik Han include how much both demographics post – teens surprisingly post less photographs than adults. Additionally, more than half of the photographs shared by teens fall under the categories of “mood/emotion” and “follow/like.” Meanwhile, a vast majority of adults posts are in “arts/photos/design,” “locations,” “nature,” and “social/people” categories. “This may be due to the fact that teens are financially and culturally dependent on their parents to venture outside of their daily activities compared to adults,” the researchers wrote in their paper.

Teens displayed more interest in getting users to follow them, as they have more hashtags and remove photos with not enough likes. According to Han, they are interested ‘in seeing how human behavior develops over time in relation to different social media platforms.”