This dissertation examines whether EFL and ESL Korean learners of English are able to produce and perceive two English phonological contrasts that depend on vowel duration differences, coda consonant voicing contrasts and the tense-lax distinction in vowels. For production, it examines differences in vowel duration and vowel quality associated…

The recent world pandemic has highlighted the need for effective procedures to teach language in Computer Assisted Language Learning (CALL) environments. Fully online and asynchronous classrooms are especially challenged when addressing learning to speak a foreign language toward greater communicative competence. Current CALL research is…

Research on digital game-based second language learning (DGBL2L) emerged in the early 2000s and has grown steadily since 2013. While digital game-based learning is widely recognized as beneficial for second language acquisition, researchers identified several gaps and limitations in empirical studies, including a lack of (1) sufficient theoretical…

The future success of today's students and our nation depends on how well prepared our students are to contribute to the globalized world of the 21st century. The population of English Language Learners (ELLs) is exploding in the United States. If students are not given the appropriate language scaffolds to learn English, ELLs will struggle…

This dissertation investigates second language (L2) learners' comprehension of conversational implicatures that arise in two speech acts, requests and refusals. The review of empirical studies that investigated L2 pragmatic comprehension revealed two recurring issues: (a) the lack of a clear definition of conventionality, leaving open the…

The theory underlying L2 oral fluency has focused on cognitive processes, particularly proceduralization (Anderson, 1983; Levelt, 1989, 1999) and linguistic constructs, especially vocabulary and grammar (Segalowitz, 2010). Towell, Hawkins, and Bazergui (1996) argued that development of formulaic language enables automatic speech production.…

Guided by Dynamic Systems Theory (DST) and multidimensional perspectives on individual differences (IDs) in instructed second language (L2) learning (e.g., Larsen-Freeman, 2014; Sun & Zhang, 2020), this longitudinal mixed-methods study focuses on three conceptually different categories of L2 learners' IDs: working memory (WM), motivation, and…

The purpose of this quantitative correlational research study was to test the threshold hypothesis as it applied to the performance of English language learner students on the Oklahoma Core Curriculum Test (OCCT) in third grade reading and the Assessing Comprehension and Communication in English State to State for English language learners…

The purpose of this mixed methods study was to examine the impact of a literacy-infused, inquiry-based science curriculum on English learners' (ELs') English oral language expressive skills as measured by the Woodcock Munoz Survey-Revised subtests: Picture Vocabulary and Verbal Analogies (Woodcock-Munoz-Sandoval, Ruef, & Alvarado, 2005). In…

Mobile devices have become a significant part of students' lives. The average number of hours that college students reported using their smartphones each day was nine hours--more than half of their daily waking hours (Roberts, Yaya, & Manolis, 2014). Although software developers and teachers have started to develop and incorporate various…

A challenge for todays instructional leaders is identifying the most effective method of educating English Language Learners (ELLs) who participate in the English as a Second Language (ESL) program. The primary purpose of the study was to compare the effectiveness of three programs used for ESL students in twelve elementary schools in a Urban…

In order to be successful in an educational setting, a student must acquire a particular register of language specific to academia, or an academic register. It cannot be acquired through ordinary social intercourse. It is specific to school. Acquiring the academic register is the greatest challenge English Learners (EL) face during their academic…

No empirical studies exist comparing the effectiveness of the two prevalent foreign language methodologies, Communicative Language Teaching (CLT) and Teaching Proficiency through Reading and Storytelling (TPRS), at helping students achieve second language acquisition. In turn, the purpose of this quantitative, quasi-experimental study was to…