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Over the last four decades, most of the significant contributions to the study of language origins and evolution have come from outside the field of linguistics, which has been dominated by theories of transformational-generative grammar. As articulated by Noam Chomsky, these theories generally agree that the ability to learn and use language is innate and specific to humans; they generally sidestep the issue of how this ability came to be, preferring to treat it as a given of the human mind.

Neurophysiologist William Calvin and linguist Derek Bickerton observe in this lively book, language is probably not a deus ex machina invention, something "tacked onto an ape brain"; instead, it evolved, along with the brain, to accommodate an ever more complex social calculus. The authors suggest that this evolution had two major phases: the first ushered in "protolanguage," individual words with only a rudimentary syntax, while the second brought forth a more complicated syntax that allowed the conception and utterance of antitruths, conditionals and outright falsehoods. Bickerton writes that "it's words, not sentences, that dramatically distinguish our species from others," while Calvin takes a more pointed interest in neural adaptations that allowed for "structured language," that is, long statements with embedded clauses and phrases. Their account of human language's origins and development does not reject Chomskyan views of language out of hand, as so many scholars have tried to do, but instead attempts to forge something of a reconciliation of notions of innate structure with those of natural selection.

That's a tall order, and, although their book advances some controversial ideas about the relative importance of social intelligence in language formation, Calvin and Bickerton make a fine and comprehensible effort in its pages. --Gregory McNamee [via]