This story was originally published by Knowable Magazine.

When my kids, ages 11 and 8, bang through the back door after school, often the first thing out of their mouths is: “Mom! Can we play Prodigy?”

After a quick mental calculation of how much screen time they've already had for the week and how much peace and quiet I need to finish my work, I acquiesce. After all, Prodigy is a role-playing video game that encourages kids to practice math facts. It’s educational.

Right?

Though video games are increasingly making their way into classrooms, scientists who study them say the data are lacking on whether they can actually improve learning—and most agree that teachers still outperform games in all but a few circumstances.

But there is growing evidence that some types of video games may improve brain performance on a narrow set of tasks. This is potentially good news for students, as well as for the millions of people who love to play, or at least can’t seem to stop playing (see infographic).

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