A study was undertaken to determine how much knowledge children have of grammatical systems before they evidence the systems in their spontaneous speech in a productive way. A child aged about two and a half years was examined over several months through elicited imitation causing him to repeat a model sentence immediately after the researcher.…

Previous studies have defined the earliest stage of child language to be the stage at which an uninitiated speaker of adult language can understand sentences spoken by the child. Upon the examination of the language of one child, aged 1 year and 7 months, it became evident that she could talk, even though it was equally evident that she didn't use…

An extreme view of language acquisition sees base structures as innate, and acquisition of the grammar of a particular language as a process of learning the transformation rules needed to get from base structures to surface structures of adult native speakers. Base structures are understood to most resemble simple-active-affirmative-declarative…

The normal sequence of development of Spanish phonology and Spanish grammatical patterns in the speech of native Spanish-speaking children, two to five years old, was studied to determine the syntactic structures and range of language variability at each chronological age level. Middle-class children, living in the Lower Rio Grande Valley of…

It is proposed that in studying the development of children's speech, the findings in the data are heavily influenced by what is expected to be found on the basis of our theoretical preconceptions. This phenomenon is actually more widespread than has previously been acknowledged, and our expectations about how children learn language may have to…