Language Evolution’s Slippery Tropes

This view now faces many rivals. The big-bang theory has been countered by linguists who believe that just as the eye evolved to meet a need for vision, language evolved to meet the need for communication. Ms. Kenneally ushers onto the stage researchers who have discovered that many animal species possess languagelike skills previously unimagined and, without benefit of syntax or words, have a complicated inner life. They believe that the study of animal language and gestures could shed light on a possible protolanguage stage in human development.

The idea that language is restricted to a specific area of the brain has been more or less discarded. Brain researchers now believe that language tasks are assigned throughout the brain. Moreover, some linguists now believe that language is a two-way street. It’s not something emanating from the brain of a communicating human. It actually changes the processes of the brain. Stroke victims suffering from aphasia, a condition involving language loss, do not simply find it difficult to communicate, they also find it more difficult to categorize, remember and organize information.

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Dr. Ronald Cohn/Gorilla Foundation/PBS

Koko, a gorilla with a vocabulary.