It is argued that the general consensus of researchers of child language that the grammatical system underlying the child's earliest multiword utterances is semantically-based, fails to provide an adequate description of even the earliest multiword utterances, and that the most sparing account of the acquisition data must include reference to…

The distinction between core and peripheral grammar made in government-binding theory sheds light on some questions concerning the acquisition of the inflectional morphology of different languages. The schedule for acquisition of the inflectional system may be determined not by the learning of particular affixes but by whether inflection is a core…