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language

Your language shapes how your brain perceives color.

A 2007 study showed that Russian speakers, who have distinct words for light and dark blue, could categorize these colors faster than English speakers.

The brain creates categories based on the linguistic labels available. This alters the speed of perceptual discrimination, suggesting that your native language subtly adjusts your visual processing speed.

The words you use create the boundaries of your world.

Where this comes from

Study
Winawer et al., 2007, PNAS
What the check found
The 2007 Winawer et al. PNAS study is a landmark finding in psycholinguistics, demonstrating that categorical perception is influenced by linguistic labels for colors.
Confidence
Well replicated

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.