According to Crain and Nakayama (1987), when forming complex yes/no questions, children do not make errors such as "Is the boy who smoking is crazy?" because they have innate knowledge of "structure dependence" and so will not move the auxiliary from the relative clause. However, simple recurrent networks are also able to avoid…

A study of the signing of six deaf preschoolers found that they produced phonological and morphological errors, and semantic overgeneralizations, comparable to those made by hearing children when learning to speak. This suggests that deaf children actively construct sign language rules in the same way that hearing children build up the rules of…