How can syntactic and learnability analyses inform each other, and thus deepen our understanding of syntax and its acquisition? This dissertation illuminates this question through three case studies in Korean syntax. I examine cases in which two structures that display distinct syntactic properties share extremely similar surface forms, thus…

The revised Speech Learning Model (SLM-r) postulates that learners with more precisely defined categories in their native language (L1) exhibit greater proficiency in acquiring sounds in a second language (L2). Despite its recent emergence, empirical studies validating this hypothesis remain scarce. This study aims to investigate the predictive…

Language ideologies can powerfully shape language learner perceptions and progress. This qualitative study investigated and reports findings based on analysis of interviews with 14 participants who self-identify as advanced users of Spanish. While dominant language ideologies in the U.S. often undermine learners reaching high levels of language…

Ambiguity is a natural part of language and in studying the comprehension and resolution of ambiguity in a second language (L2), we must consider the influence of the native language. This dissertation examines L2 processing of the lexical semantic ambiguities, homonyms and polysemes. These are words that share the same form but have different…

This dissertation delves into second language acquisition, sociophonetic variation, and speech perception, investigating how prior linguistic experiences and exposure to regional variations in a second language influence the decoding of dialectal linguistic cues. It aims to enhance the understanding of words pronounced with different phones and…

This research consists of an eye-tracking study examining the efficacy of eye gaze indexing (EGIX) in manipulating viewer eye gaze and enhancing second language (L2) fingerspelling comprehension in American Sign Language (ASL) through a controlled laboratory experiment. The study consisted of two groups and two conditions, EGIX+/EGIX- to test the…

This dissertation is a quantitative analysis of language proficiencies through the lens of the dynamic model of multilingualism, using survival analysis to evaluate time until thresholds of foreign language proficiency are reached and nonparametric tests (Wilcoxon signed rank and Kruskal-Wallis) to compare proficiencies at distinct time intervals…

The current dissertation investigates factors that influence usages of Japanese honorifics and explores how instructors can introduce honorifics more effectively to second-language learners. Apart from existing literature, my data includes a corpus of real-life usages of Modern Japanese, classroom observations, interviews with Japanese language…

High variability pronunciation training (HVPT) has been found to be successful for training various segmentals, such as the challenging /l/-/[voiced alveolar approximant]/ contrast, and suprasegmental features such as tone and pitch accent. These studies have found that HVPT is an effective method not only in helping learners improve their…

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…

This dissertation explores the experiences of adult English as a Second Language (ESL) learners in an Adult Basic Education (ABE) program. ABE/ESL learners are a unique but integral population within the language learning community and are largely excluded from the scholarly discourse. Research in the context of language learning and instruction…

Language learning is a complex issue of interest to linguists, computer scientists, and psychologists alike. While the different fields approach these questions at different levels of granularity, findings in one field profoundly affect how the others proceed. My dissertation examines the perceptual and linguistic generalizations regarding the…

This investigation examined the effectiveness of different types of explicit classroom instruction on second language (L2) development of the Spanish discourse marker (DM) "pues." While several studies have addressed the positive effect of explicit instruction on L2 DM development, the current investigation moves beyond the…

The present dissertation examined the initial state of L3 phonology in native speakers of French and German who were Spanish-English bilinguals. The present work analyzed perception (Chapter 3), production (Chapter 4) and the perception production interface (Chapter 5). The results revealed that these bilinguals are influenced by both of their…

The purpose of this qualitative, descriptive study was to explore how college English as a second language educators described how English as a second language learners used direct and indirect Language Learning Strategies in facilitating their learning at a higher education institution in the Southwest region of the United States. The research is…