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Clark, Eve V.; Carpenter, Kathie L. – Journal of Child Language, 1989
A study of two- to six-year-olds' spontaneous uses of "from" to mark oblique agents showed that, while the two-year-olds produced "from" for agents and "with" for instruments in imitation, older subjects shifted to "by" for agents and kept "from" to mark locative sources. (Author/CB)
Descriptors: Age Differences, Child Language, English, Language Acquisition
Malamud Makowski, Monica – 1994
This study investigated the earliest manifestations of verb tense and agreement in English-speaking children, using longitudinal data on the language of four children aged 1:6 to 3:5 years, drawn from a child-language database. Analysis focused on one aspect of inflectional phrase (IP), the children's use of the verbs "be" and "do" forms to mark…
Descriptors: Age Differences, Case Studies, Child Language, Comparative Analysis