Learning vocabulary and understanding texts present difficulty for language learners due to, among other things, the high degree of lexical ambiguity. By developing an intelligent tutoring system, this dissertation examines ...

This dissertation investigates and problematizes emergent bilingual students' achievement gaps in an existing corpus of middle-school science assessment data. I first characterize achievement gaps across national data, ...

Due to their internal complexity, English conditional phrases (e.g., "If it rains tomorrow, we will cancel the picnic"; "If John had come to the party yesterday, he would have told you his favorite joke"; etc.) represent ...

This dissertation explores how the type of structure is related to the effectiveness of different forms of corrective feedback provided during interaction and whether/how individual differences in working memory (WM) and ...

Very few studies have shown that written feedback facilitates L2 learning (although see Bitchener, 2008, Bitchener & Knoch, 2008, and Sheen, 2007), and studies exploring the relative effectiveness of different types of ...

This dissertation examines the interaction between lexical and discourse level categories in second language speech; specifically, the interaction of tone and intonation in the speech of Mandarin learners of English. The ...