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Evidence reveals that the language of thought is not natural language

Separating logic and language
Caption:A functional brain scan of a neurotypical participant in a new study shows a distinct separation between logic (green) and language (red/yellow) activations. Credit: Hope Kean

Some people find it useful to talk through their problems—but language isn’t necessary for logical reasoning, cognitive neuroscientists at MIT’s McGovern Institute for Brain Research say.

In research published in the journal PNAS, researchers led by MIT associate professor of brain and cognitive sciences Evelina Fedorenko have shown that people can perform well on tasks that require logical reasoning even if their language abilities are severely impaired. What’s more, brain imaging shows that language-processing parts of the brain are not called on for logical reasoning.

Philosophers, linguists an...

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