Scientists have finally learned what book lovers have known for some time — reading fiction makes you a better person.

From Readers Digest:

Anyone who reads understands the bittersweet feeling of finishing a good book. It’s as if a beloved friend has suddenly packed her things and parted, the back cover swinging closed like a taxicab door. Farewell, friend. See you on the shelf.

If you’ve ever felt weird for considering fictional characters your friends or fictional places your home, science says you no longer have to. A new body of research is emerging to explain how books have such a powerful emotional pull on us, and the answer du jour is surprising—when we step into a fictional world, we treat the experiences as if they were real. Adding to the endless list of reading benefits is this: Reading fiction literally makes you more empathetic in real life.

Not all fiction is created equal, though—and reading a single chapter of Harry Potter isn’t an instant emotion-enhancer. Here are a few key caveats from the nerdy scientists trying to figure out why reading rules.

Rule #1: The story has to “take you somewhere.”

How many times have you heard someone declare that a good book “transports” you? That immersive power that allows readers to happily inhabit other people, places, and points of view for hours at a time is precisely what a team of researchers in the Netherlands credit for the results of a 2013 study in which students asked to read an Arthur Conan Doyle mystery showed a marked increase in empathy one week later, while students tasked with reading a sampling of news articles showed a decline.

Read the entire article here.