First things first: Choose your house.
Dr Laura Crysel and colleagues recruited 132 Harry Potter fans and Pottermore users through Twitter, Tumblr and Facebook for the study.
Crysel and her colleagues made predictions about which personality traits each house would exhibit based on the books.
As the quiz shows above, not all of these things turned out to be true.
Belonging to a fictional group could even change how you see yourself.