This dissertation investigates the longitudinal development of Chinese language proficiency among students in a Chinese as a Foreign Language (CFL) Flagship Program at an American public university from 2014 to 2024. Using Bayesian multilevel regression models, this study assesses the trajectories of listening, speaking, and reading proficiency…

In the field of Instructed Second Language Acquisition (ISLA), written corrective feedback (WCF) has been shown to play a facilitative role in improving written accuracy (e.g., Ashwell, 2000; Ferris & Roberts, 2001; Ferris, 2006; Sheen, 2007; Bitchener, 2008; Liu & Brown, 2015). However, studies that examine the effects of different types…

Quechua language education and research has long been relegated to rural areas and elementary schools of the Andes. Nonetheless, current language policy in the southern Peruvian region of Cusco has opened new opportunities for Quechua, a minoritized Indigenous language, to be taught in cities and towns and in high schools. In this sociolinguistic…

There is difficulty in defining the profile of a Heritage Language Learner (HLL) due to the experiences with language that individuals face in their social and academic world. There are questions centered on whether a categorical distinction between the native speaker and the native user can be upheld; this is inherently problematic when there is…

Having acquired some degree of oral proficiency but low (or non-existent) literacy, the learning of Chinese heritage learners' (CHLs) learning needs are different from those of Chinese foreign language learners (CFLs), who have learned Chinese only in the classroom setting. Although researchers have advocated for a separate curriculum for…

This study examined the linguistic competence in Korean of Korean heritage language learners (HLLs), compared to English-speaking non-heritage language learners (NHLLs) of Korean. It is unclear and controversial as to whether heritage languages learners are exposed to early but are interrupted manifest as L1 competence or share more…

Heritage speakers (HSs) of Russian in the United States form a very complex and diverse group of learners. Research in heritage linguistics has examined key parameters of the HSs' oral production. Important work has been done in heritage language (HL) pragmatics, morphology, and lexicon. However, very few studies have been conducted to…

Having orally proficient Spanish speaking heritage learners in a class alongside monolingual English speakers who are learning Spanish as a second language is quite the challenge: the heritage learners' ability to converse can be intimidating to the non heritage learner, but at the same time, the non heritage learner's ability to grasp the grammar…

This dissertation reports findings from a study documenting the use of multimedia technology among Indigenous language communities to assist language learners, speakers, instructors, and institutions learn about multimedia technologies that have contributed to Indigenous language revitalization, education, documentation, preservation, and…