Language 1. Trace the course of language acquisition and discuss alternitive theories of language development. Children's language development mirrors language structure-by moving from simplicity to complexity. Beginning at 4 months infants enter a babbling stage in which they spontaneously utter various sounds at first unrelated to the household language. By the time a baby is about 10 months old, a trained ear can identify the language of the household by listening to the infant's babbling. Around the first birthday, most children enter the one-word stage, and by their second birthday, they are uttering two-word sentences. This two-word stage exemplifies telegraphic speech. This soon leads to their uttering longer phrases (there seems to be no "three-word stage"), and by early elementary school they understand complex sentences. Behaviorist B. F. Skinner argued that we learn language by the familiar principles of association, imitation, and reinforcement. Challenging this claim, Noam Chomsky
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