Source-based writing is a complex and frequently occurring task type in postsecondary education. While a large body of research now exists investigating source-based student writing, few studies have used corpus-based methods to investigate L1 student performance on source-based writing tasks and to connect this performance to the holistic quality of source use. The current study investigates the relationship among functional dimensions of source use, operationalized for each text ( N = 150) as factor scores from a previously conducted multidimensional analysis, and the quality of source use through a simultaneous multiple regression. Then, using the two functional dimensions that emerged as significant predictors of the holistic quality of source use, a qualitative analysis was conducted to investigate how the most strongly loading variables on those two functional dimensions may be contributing to the effectiveness of source use. Implications are discussed as they relate to the development of source-based L1 student writing.

Developmental composition courses serve a sizable and growing number of Generation 1.5 students, or long-term U.S. resident language learners, and it is believed that language challenges may be part of Generation 1.5 writers’ difficulty in controlling the academic register. The current study investigates possible similarities and differences between Generation 1.5 students ( n = 149) and two other student groups: mainstream first language (L1) writers ( n = 203) and more traditional second language (L2) writers ( n = 55), thus determining the extent to which language-use variables distinguish Generation 1.5 texts from those of their classmates. Results indicate significant differences between Generation 1.5 and L2 students on holistic writing quality, word errors, word class errors, verb errors, total identified errors, and spoken features of language. Generation 1.5 and L1 texts significantly differed on academic features of language. Implications are presented, suggesting that developmental Generation 1.5 writing may be more similar to L1 writing than has been previously reported.

Recently, scholars have suggested that “second-language writers” are made up of two distinct groups: Generation 1.5 (long-term U.S.-resident language learners) and more traditional L2 students (e.g., international or recently arrived immigrants). To investigate that claim, this study compares the first-year composition writing of Generation 1.5 students to the writing of their classmates to determine whether textual markers distinguish demographically identified groups. Results indicate no significant textual differences between Generation 1.5 and L1 (English as a first language) students but do indicate significant differences between Generation 1.5 and L2 students, suggesting that Generation 1.5 writers (broadly defined) may not be second-language writers.