Speech perception precedes, indexes, and is changed by language acquisition. What is exceptional about human infants is not their sophisticated speech perception (for animals perceive human speech similarly) but their use of speech to regulate linguistic attention and bootstrap language. Using a new validated measure, language specific speech perception (discrimination ability for native minus non-native speech sounds), we can ascertain children's distribution of resources in linguistic tasks. T ....Speech perception precedes, indexes, and is changed by language acquisition. What is exceptional about human infants is not their sophisticated speech perception (for animals perceive human speech similarly) but their use of speech to regulate linguistic attention and bootstrap language. Using a new validated measure, language specific speech perception (discrimination ability for native minus non-native speech sounds), we can ascertain children's distribution of resources in linguistic tasks. This measure will be used in conjunction with a raft of experimental psycholinguistic techniques to investigate speech perception bases of phoneme perception, tone perception, word meaning, reading, and their vestiges in adulthood, to arrive at a dynamic new conception of language development. Read moreRead less