Matt: Is there a more modern book you can suggest? I have a hard time swallowing conclusions drawn considering that in 1992 we didn't know half as much about cognition/intelligence/evolution as we do now.-No, I don't know of one offhand, but the material here on anatomy and probable develoment of speech should not have changed that much. The newer developments I am aware of involve the innate knowledge little kids have naturally for syntax across all languages. All language is based on the same concepts of organization.