Over past decades, there has been a paradigm shift in WL instruction, moving away from traditional, grammar-based programs and toward instruction that promotes student proficiency in the target language. Despite this growing attention to proficiency-based instruction, few studies have investigated the relationship between proficiency-based…

In the ever-changing digital era, the surge of online informal language learning platforms has revolutionized the way we learn new languages. This dissertation delves into the critical role of interactional feedback (IF) in synchronous computer-mediated communication (SCMC), a cornerstone for optimizing these digital learning spaces. Anchored in…

Domestic immersion (DI) is an effective context for postsecondary language learning, given that DI's instructor-curated environments promote meaningful second language use while providing abundant support for learners. However, DI is at present understudied within second language acquisition research, especially when compared to its more…

This study evaluates the impact of a computer-assisted language learning (CALL) tool for the acquisition of academic English and oral language skills in children learning English as a second language. Using a quasi-experimental design, we compare English proficiency scores for K-5 students who did or did not use the program during the 2020-21…

This study investigated the differences between the ACTFL Oral Proficiency Interview (OPI) and the ACTFL Oral Proficiency Interview - Computer (OPIc) among Spanish learners at a U.S. university. Participants (N = 154) were randomly assigned to take both tests in a counterbalanced order to mitigate test order effects. Data were analyzed using an…

The Elicited Imitation Task (EIT) is a popular technique for efficiently measuring global proficiency in multiple languages, and accumulated evidence indicates high reliability and strong relationships with other proficiency measures. Nevertheless, several dimensions of EIT design remain open to investigation, including the assumption that a pause…

Using a structural equation modeling approach, this study investigates the structural relationships between second language (L2) oral proficiency and interest in learning the target language (L2 interest), in the presence of potential mediating variables (i.e. perceived importance of speaking, out-of-class contact with L2 resources). It also…

Recent research shows that musical training improves children's development of oral and aural skills. This study focuses on developing and testing a methodological framework (Music as a Medium of instruction, MMI) in English language teaching (ELT) by contrasting MMI and gamification methodologies with the participation of 22 Spanish children all…

Research has indicated that lexical richness is an important indicator of second language (L2) proficiency. However, most research has examined written, cross-sectional English L2 corpora and does not necessarily indicate how spoken lexical use develops over time or whether observed trends are stable across L2s. This study adds to previous…

Although lexical diversity is often used as a measure of productive proficiency (e.g., as an aspect of lexical complexity) in SLA studies involving oral tasks, relatively little research has been conducted to support the reliability and/or validity of these indices in spoken contexts. Furthermore, SLA researchers commonly use indices of lexical…

Spoken English Competency (SEC) remains a critical weakness in English Proficiency (EP) of Chinese college students, particularly when compared with their English competency in writing and reading. Despite years of English learning since elementary school, Chinese college students often struggle to master SEC. Although previous studies have…

The ACTFL Oral Proficiency Interview--computer (OPIc) employs a self-assessment instrument to determine the nature of the speaking prompts to which the test taker will respond and, thus the difficulty of the test. Grounded in research demonstrating varying levels of accuracy in self-assessment among language learners, this study examines the…

This research was conducted to investigate AI integration in the development and evaluation of English oral communication skills, within both academic and professional practices. This study used a mixed-methods design, combining data from a quasi-experiment with qualitative data collected through interviews with students and instructors. Results…

Second language (L2) teachers may shy away from self-assessments because of warnings that students are not accurate self-assessors. This information stems from meta-analyses in which self-assessment scores on average did not correlate highly with proficiency test results. However, researchers mostly used Pearson correlations, when polyserial could…

Creating its own learner corpus, this research proposed to analyze and classify the transition markers used in solo presentation by 30 Thai engineering students based on Hyland (2019)'s Marker Categorization in Textual Metadiscourse. This research also aimed to identify and compare the quantities of individual transition markers among three groups…