A common assumption underlying cross-linquistic studies in child language is that the comparison of any feature in unrelated languages may simplify semantic-grammatical complexities in a way that studies on a single language cannot. This paper begins by discussing the order of acquisition of grammatical morphemes in Spanish by four…

This paper proposes a broad outline of a variable model of language development and explores several particulars of such a model in the language behavior of four two-year-old children. The process by which information about language is progressively transformed and integrated rather than merely being added together can be seen in the shifting…