Scientist Terrence Deacon claims that his research results suggest that human psychological evolution has resulted principally from brain chemistry and that those scholars who believe that language and symbol-making played a big role in shaping our development seem to be incorrect.

Question

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While Deacon's research does emphasize the role of brain chemistry in human psychological evolution, it does not necessarily negate the role of language and symbol-making. In fact, many scholars believe that language and communication were pivotal in the development of our species. Deacon's views may be one perspective, but they are not necessarily universally accepted.

Scientist Terrence Deacon Claims That His Research Results Suggest That