Bilinguals sometimes code-switch between their shared languages. While psycholinguistics research has focused on the challenges of comprehending code-switches compared to single-language utterances, bilinguals seem unhindered by code-switching in communication, suggesting benefits that offset the costs. I hypothesize that bilinguals orient their…

Across three experiments, the current study explored how accented speech and coarticulation impact how bilingual listeners comprehend code-switches in speech. Eye-tracking methodology was used to compare responses to single-language and code-switched sentences. Experiment 1 observed how accented speech influenced the costs involved in…

This dissertation investigates the extent to which bilingual speakers' cognitive representations of the syntactic structures of their two languages are interconnected. This is a substantially understudied domain despite the widespread existence of bilingual/multilingual communities in the world, including the US. To draw solid conclusions about…

This study investigates the integration of content and language in a Mandarin immersion program, focusing on the interplay between teacher beliefs and pedagogical practices. It examines how these practices align or diverge from teachers' stated educational ideologies through interviews, observations, and a questionnaire. This qualitative case…

Building on the existing concepts of multiliteracies and of translanguaging repertoires, I propose the concept of transliteracy repertoires--or the idea that individuals' idiolects do not naturally delineate between named languages or named modes. I theorize that these transliteracy repertoires: (1) are deeply connected with individuals'…

Although the United States has a population with diverse linguistic and cultural backgrounds, multilingual education has been greatly influenced by monolingual and raciolinguistic ideologies (Flores & Rosa, 2019; Garcia, 2014; Ruiz, 1984). With world language enrollment continuing to decline (Lusin et al., 2023), investigation of the lived…

Code-switching (switching between languages) is a common linguistic behavior in bilingual speech directed to infants and children. In adult-directed speech (ADS), acoustic-phonetic properties of one language may transfer to the other language close to a code-switch point; for example, English stop consonants may be more Spanish-like near a switch.…

While much of the existing literature on code-switching focuses on languages that differ typologically, this dissertation focuses on typologically similar languages. Code-switching between Mandarin and Taiwanese is examined through the perspectives of 1) sociolinguistics, 2) typology, 3) phonetic and phonological production, and 4) speech…

The objective of the present study is to analyze word-initial voice onset time (VOT) in the context of code-switching (CS). More specifically, this study combines research methods from sociolinguistics and phonetics to investigate how 32 heritage Spanish speakers (HSSs) of Mexican descent, living in Indiana, produce VOT for /p t k/ in word-initial…

Integrating research on both linguistic and semiotic resources of translanguaging practices, this research was carried out using a case study design to understand how translanguaging was used by both ESL teachers and adult language learners in the ESL setting, what functions translanguaging performs, and how teachers and students understand their…

This qualitative action research case study is focused on better understanding the complex and intricate nature of code-switching among Black students. In today's educational climate, many Black students find themselves speaking one way with their closest friends and family members in front of the swing set and television and another way with…

Neurophysiological sentence processing studies are inconsistent about the additional costs that language switching within sentences (i.e., codeswitching) may bring about (cf. Valdes Kroff et al., 2020; Yacovone et al., 2021). There is discussion about whether there are, in fact, additional costs and, if so, about the origins of those costs, since…

The purpose of this qualitative study is to gain insight into the experience of bilingual teachers undergoing a change of bilingual education program, from a TBE model to a DLBE model. This study documents the ways the bilingual teachers experienced changes in their language ideologies, their teaching practices, and the support, or lack thereof,…

Multilingual learners labeled as disabled have less access to bilingual educational programming compared to their nondisabled peers. As well, special education teachers have not been prepared to support multilingual learners. Therefore, the present study examined whether coaching may be an effective form of professional development for special…

Recent research on second language and subject-matter learning calls for moving away from hegemonic monolingual education in U.S. schools and instead making "translanguaging" the norm by supporting bi/multilingual students to use their full linguistic repertoires as they participate in classroom learning (Garcia, Johnson, & Seltzer,…