This study investigates how aspects of collocational proficiency affect the ratings that expert examiners give to second language (L2) English learner essays. Lexical proficiency is a multi-faceted phenomenon and certain aspects of it are particularly impactful on human judgements, including lexical sophistication and accuracy. However, the…

The number of multilingual international students in post-secondary mathematics classrooms in the United States is increasing. As language is related to students' access to mathematics learning and their (mathematics) identities, it shapes their experiences as a doer of mathematics. However, as multilingual international students move to the…

Second language learners constitute a significant and expanding portion of the global population and there is a growing demand for tools that facilitate language learning and instruction across various levels and in different countries. The development of large language models (LLMs) has brought about a significant impact on the domains of natural…

This study is an investigation of the effects of linguistic features on quality of second language (L2) writers' essays for writing course placement at Indiana University Bloomington (IUB), and by implication at other universities and colleges. This study addresses the following research questions: (1) To what extent do selected linguistic…

This study examined the differences and similarities among the writing of three types of developmental English and advanced ESL United States community college students, comparing the writing of resident English learners (RL2), whose home language was not English but who attended United States public schools for five years or more, to that of…

Multilingual college students often struggle with writing and revising for academic purposes. This dissertation explored the effectiveness of a Concept-Based Language Instruction (C-BLI) approach to teaching revision processes to college-level multilingual writers. Although a significant body of research exists on effective feedback on…

Individual differences factors (IDs) play significant roles in second language (L2) learning. Compared to the general field of SLA, however, little is known in the L2 writing domain regarding the influence of learner factors in L2 writing achievement. Therefore, in this study, I aimed to extend the IDs research in L2 writing by closely examining…

An important component of academic writing in English is the word combinations or collocations writers use while expressing meaning and performing various rhetorical functions. It is essential for second language (L2) writers to gain command of these lexico-grammatical combinations (Cortes, 2004; Hyland, 2008a, 2008b) as they develop their L2…

We examined spelling errors patterns, cohesive ties, and syntax features in English and Spanish essays written by Spanish-English emergent bilinguals in Grades 1, 2, and 3 (N = 278; 51% female) enrolled in either English immersion or English-Spanish dual immersion programs. In Study 1, we addressed whether students made consistent spelling errors…

While written corrective feedback (WCF) is expected to help learners build new knowledge (Bitchener and Storch, 2016), engagement with WCF is not always satisfactory (Ferris, Liu, Sinha, and Senna, 2013). The purpose of this case study is to explore engagement with WCF by undergraduate of Japanese as a foreign language (JFL) at the elementary…

This dissertation uses the Conceptual Blending Hypothesis from the socio-cognitive method presented and refined by Kecskes (2002, 2004, 2007, 2010, 2020) to explain how the lexical choice of bilinguals differs across sociocultural situations. Quantitative (lexical density, lexical diversity, and lexical sophistication) and qualitative (lexical…

This study explores its participants' task-based linear wiki-afforded collaborative writing experiences as well as their perceptions of these experiences. Its pre-task survey establishes the preparedness for collaboration of its participants, nine Saudi female TESOL graduate students working in three groups. Further, its mock writing task draws…

In the past three decades, the construct of second language (L2) writing complexity has been theorized and refined in both second language acquisition (SLA) (Crossley, 2020; Housen, De Clercq, Kuiken, & Vedder, 2019; Lu, 2011; Norris & Ortega, 2009) and Systemic Functional Linguistics (SFL) research (Byrnes, 2009; Ryshina-Pankova, 2015;…

Under the framework of item response theory (IRT) and generalizability (G-) theory, this study examined the effects of item difficulty on rating reliability and construct validity on both the constructed-response (CR) items and essay items on English examinations. The data collected for this study were students' scores and responses on the two…

Since the 1990s, grammatical complexity is a topic that has received considerable attention in various fields of applied linguistics, such as English for academic purposes, second language acquisition, language testing, and second language writing (Bulte & Housen, 2012). Many scholars in applied linguistics have recently argued that…