190)According to Chomsky, the deep structure of a sentence refers to the way a sentence is to be understood. 191)According to Chomsky, the surface structure of a sentence refers to the way a sentence is to be understood. 192)To transform surface structures into deep ones, children must apply rules of grammar. 193)According to Chomsky, children are born with a universal grammar, that is, their brains are sensitive to the core features common to all languages, such as nouns and verbs, subjects and objects, and negatives. 194)A language acquisition device is defined as an innate mental module that allows young children to develop language if they are exposed to an adequate sampling of conversation. 195)Children in different cultures go through different stages of language development. 196)Children not exposed to adult language may invent a language of their own. 197)Psycholinguists have found that children combine words in ways that adults never would. 198)Psycholinguists have found that adults consistently correct their children’s syntax. 199)Psycholinguists have found that children in different cultures go through similar stages of linguistic development.