With the large numbers of international students on campuses across the United States seeking help from writing centers, more research is needed on how second language writing skills develop over time. Expanding our previous studies of second language writing, we wanted to learn more about what international students think about the development of their ability to write in English and the role of the writing center in it. To that end, we designed a survey that asked participants about different features of their writing and how these had changed since starting to write at the college level. The results reveal that participants perceived their overall English-writing development positively, and they reported their rhetorical and linguistic areas as almost equal in development. We also found that participants who used our writing center perceived both rhetorical and linguistic features to be more improved than did participants who had not used the writing center. The rhetorical features participants reported as the least improved involve communicating with readers, while the linguistic features they saw as the least developed include word

Motivated by increasing international student writing center use to learn more about second language writing development and its assessment, we conducted a case study of an undergraduate writer who submitted drafts to online tutoring over two years. Synthesizing the perspectives and methods of Applied Linguistics with those of First-Language Composition, we assessed the writer's short-and long-term progress in the rhetorical, linguistic, and writing process components of her writing development. We found linguistic improvement in accuracy, especially short-term between drafts and revisions more so than over time, but only modest long-term improvement in both rhetorical and other linguistic components. We attributed these results to the writer's expedient writing process and her narrow conceptions of writing development and of her tutors' role in it. These expedient processes and narrow concep-

Examining 200 word choice errors from Chinese students' drafts submitted to a writing center's online asynchronous tutoring program, the present study demonstrates that second language writers need help with word choice. Word choice problems, a natural part of second language learning, can negatively affect rhetorical effectiveness and readers' comprehension and evaluation. The study showed that 11% of online tutors' marginal comments related to word choice problems, among which 18% were due to translation. (Other error types were Wrong Context, Synform, Idiomaticity, Precision, and Register.) Direct corrections were the most common type of tutor comments -35%. (Other comment types were Explanation, Options, and Questions.) These numbers show that word choice errors are indeed critical, that even experienced writers rely on their first language, and tutors need more knowledge about word choice issues and how to provide instruction and feedback on them.