describe one criticism researchers have of the behaviorist; the ability to learn new words after being exposed to it once is __________.; describe metalinguistic awareness.; according to the __________ theories, nature and nurture are both important to language development.; according to the behaviorist theories of language acquisition, language is __________.; humans are the only animals capable of communication.; some researchers suggest that primates are able to do all of the following except __________.; which of the following is an accurate description of how language influences thought