Why Your Brain Names Shapes

Even without meaning, humans reliably link specific sounds to physical forms. We almost universally name rounded shapes bouba and jagged ones kiki, regardless of our native language or culture.

This phenomenon reveals that our brains do not assign names to objects entirely by accident. There is a deep, instinctual mapping between the shape of our mouths when making a sound and the geometry of what we see. For instance, the word bouba mimics the rounded movement of our lips, while kiki involves sharp, sudden tongue movements. This suggests that language might have originated from a shared human desire to mimic the physical world through sound.