Early and late bilinguals both differ in the speed with which they comprehend language or in their processing of sentences compared to monolinguals. This is possibly a result of cross-language interference, differential allocation of cognitive resources, or some other difference in language-dependent processes. This dissertation presents research…

The purpose of this mixed-methods sequential explanatory study was to investigate the effects of watching text-relevant video segments on reading comprehension of a culturally unfamiliar text when technical words are present or absent. Therefore, 44 adult English Language Learners (ELLs) with higher-intermediate to advanced English language…

The digital transformation in educational assessment has led to the proliferation of large-scale data, offering unprecedented opportunities to enhance language learning, and testing through machine learning (ML) techniques. Drawing on the extensive data generated by online English language assessments, this dissertation investigates the efficacy…

Teaching and learning online was extensively adopted in English as a foreign language (EFL) teacher education program, as well in education of all levels in China with the advancement of the internet, multimedia information processing, cloud computing, and other information technologies since 1994. However, online education has remained more of a…

Bilingual advantage literature proposes that bilinguals perform significantly better on tasks of executive functioning when compared to monolingual individuals. This study explored the theory of the bilingual advantage when individuals were exposed to an increased cognitive load due to emotionally valenced stimuli. Due to the limited capacity of…

English learner (EL) children (i.e., children learning English as a second language) constitute one of the fastest growing, yet disproportionately underachieving, segments of the U.S. public-school population. A main difficulty that ELs face at school is learning English and content-area knowledge in tandem. Low levels of English proficiency may…

This dissertation investigates the morphological and morphosyntactic processing of case-marking by native and nonnative speakers of Turkish, through behavioral and electrophysiological responses. The study explores the locus of case processing costs during first (L1) and second language (L2) word recognition both in isolation and in sentences. It…

Recent data indicate a drop in the enrollment and re-enrollment of international students at colleges and universities in the United States. Campus climates and cultures, specifically the historically grounded facet of these climates and cultures, remained unexplored as a possible cause. This ethnographic case study's purpose sought to explore the…

Naturalistic language learning is contextually grounded. When people learn their first (L1) and often their second (L2) language, they do so in various contexts. In this dissertation I examine the effect of various contexts on language development. Part 1 describes the effects of textual, linguistic context in reading. I employed an eye-tracking…

The problem addressed through this study was that, in English as a foreign language (EFL) classrooms, adult learners in an intensive English program often suffer from tiredness, mental overload, and not having enough time for learning, these are factors which negatively impact their ability to learn English successfully. The purpose of this study…

This study draws on user-driven, design-based collaborative research with participants to research, create, deploy, and measure user-experiences with a mobile App-delivered English for Occupational Purposes (EOP) training prototype that supports workplace adult second language (L2) language learners in three phases. Phase I consisted of a needs…

The purpose of this qualitative descriptive study was to examine how Hispanic/Latinx ESL students describe their engagement and overcome learning challenges in higher education flipped classrooms. After completing a questionnaire, 12 participants from a community college and university in southern California described their experiences in a…

Skill acquisition theorists conceptualize second language (L2) learning as the acquisition of a set of perceptual, cognitive, and motor skills. The dominant view in skill acquisition theory is to regard L2 skill acquisition as a three-stage process "from initial representation of knowledge through initial changes in behavior to eventual…

Cognitive flexibility (switching) and control (inhibition) are among widely accepted cognitive advantages of bilingualism. Switch Cost (SC), i.e., the time difference to complete a switch versus non-switch task, is a construct for measuring the switching ability. The need to control the interference and switching between one's languages leads to…

Analysis of second language (L2) learners' language development can allow valid and reliable assessment of the learners' L2 linguistic knowledge, which can enable the teachers and researchers to choose appropriate teaching or experimental materials (Bardovi-Harlig & Bofman, 1989; Wolfe-Quintero et al., 1997). However, most language development…