In the 1960s and 70s, a group of chimpanzees astonished the world by learning sign language. Only two remain and one question ...
Humans are often thought to be the only animals capable of language. But it’s difficult to prove a negative like this because we’ll never definitively know the subjective interior monologues of other ...
This research was supported by funding from: The National Center for Competence in Research "Evolving Language" (SNSF agreement number 51NF40_180888) Swiss National Science Foundation (project grant ...
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