Before You Start


20-30 minutes

20-30 minutes

linguistics, psychology, human behaviors



If you had to name some shapes “Bouba” and others “Kiki,” which name would you give a pointy shape? How about a rounded shape? Would your friends have the same answers? In this activity, you will investigate the Bouba-Kiki effect to learn more about the human brain’s fascinating connection between shapes and sounds.

stem download The Bouba Kiki Effect



Teisha Rowland, PhD, Science Buddies
Sara Agee, PhD, Science Buddies Alumni


This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,150 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.


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