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This thesis examines the use of conjunctions in texts, and in particular their function as a marker of text type. Children's acquisition of this aspect of conjunction usage is the main focus. An examination of the characteristics of various text types and the nature of coordinate and subordinate conjunctions in English serves as a framework within which the experimental evidence from adults and children (aged three to five) is considered. Three types of texts--conversation, narratives, and game explanations--were collected. It was found that both the types of conjunctions used and the frequency of conjunctions as a class vary according to text type; conjunctions are much more frequent in narratives and explanations than in conversation. It is shown here that pragmatic or cognitive factors cannot account for these findings; they can only be explained as a function of text type. The data from the children provide evidence that their conjunction usage is also constrained by text type, although their patterns of use are not exactly the same as the adults'. The results indicate that by age five children have a definite conception of text as a linguistic entity.

This dissertation analyzes the production and functions of the conjunctions and, but, so, and then as discourse markers in English as a Second Language (ESL) students' oral narratives. Two types of narratives are analyzed: a non-guided, or spontaneous narrative, and a picture-guided-narrative. Narratives of forty three ESL students are included in the analysis as well as narratives from six native speakers.This study indicates that l) the ESL students attach a narrowly defined meaning to and, but, so, and then, 2) the ESL students use and, but, so, and then to link previous sentences or ideas. or refer back to ideas, less than for any other function, 3) the ESL students do not use a greater number of occurrences of and, but, so, and then in the picture-guided-narrative than in the non-guided-narrative, and 4) the ESL students misuse conjunctions in similar ways regardless of their native language (LI ); that is, although the influence from a student's Ll may result in specific problems of transfer, some patterns of conjunction errors are unrelated to the Ll and may be indicative of a more general problem. / Department of English

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND HUMANITIES. / Bibliography: leaves 251-255. / Ph.D.