This dissertation investigates the potential of sustained use of academic vocabulary in reciprocal dialogue to improve educational equity for fifth-grade students with specific reading disabilities. Students with reading disabilities often struggle with acquiring academic vocabulary, which can hinder their overall academic performance and limit…

One of the fundamental questions in the field of language acquisition is a learnability problem, which considers how learners acquire certain aspects of language which are not directly provided in the input or whose referents are not readily observable. This dissertation investigates Japanese children's acquisition of various linguistic phenomena,…

The assessment data in La Frontera School District suggests a need for improving instructional practices for middle school emergent bilingual migrant students' language and reading development. One possible solution to the language and literacy issues maybe introducing cognates. Cognates are words with identical or similar orthography and meaning…

Usage-based theories of language development underscore the importance of children using language to learn language. Few investigations have applied usage-based theories to dual language learners (DLLs), who comprise a growing share of children attending early education programs in the U.S. Three studies were carried out to investigate the role of…

When acquiring a second language, learners must become able to perceive the difference between novel sounds ("discrimination") and also associate strings of sounds with distinct vocabulary items ("lexical encoding"). Recent research has questioned whether discrimination is a sufficient or necessary condition for encoding, and…

This qualitative case study of a high school world language (WL) classroom with flexible language boundaries (Cummins, 2012; Creese & Blackledge, 2010; Garcia & Li Wei, 2014; Turnbull & Daily-O'Cain, 2009) examines how proficient L1 readers constructed meaning from authentic L2 text as emerging bilinguals. Grounded in sociocognitive…

Dialogue systems, commonly called as Chatbots, have gained escalating popularity in recent times due to their wide-spread applications in carrying out chit-chat conversations with users and accomplishing tasks as personal assistants. These systems are typically trained from manually-labeled data and/or written with handcrafted rules and often, use…

This qualitative phenomenological research study examined parent perspectives on shared reading in science. This study was designed to understand parents perceived shared reading to influence their child's science vocabulary and comprehension. The purpose of the study was to determine how parents perceive shared reading to impact their…

In a district where only 5% of ELLs were deemed language proficient, the problem was the need to understand teacher perceptions of best practices to increase English language learner (ELL) achievement in reading and writing. The purpose of this qualitative study was to examine teacher perceptions of best practices to support ELLs in improving…

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.…

Enabling learners to successfully use their second language (L2) in meaningful ways is a critical goal of instruction. Ultimately, most learners want to meet the L2 demands of the contexts in which they will use the language. To accomplish this, learners must develop linguistic knowledge and apply it in a manner that is contextually appropriate…

The purpose of this research was to explore the perceptions of non-Arab preschool teachers' experiences in assessing Arabic-English dual language learners (DLLs) in classrooms using a well-established, teacher scored authentic assessment of early childhood holistic development. Moreover, this study explored parents' experiences by discussing these…

An experimental crossover research design was utilized to investigate the effects of multimedia-enhanced instruction on the vocabulary acquisition of dual language learners in the early childhood age range. Sixteen 3-year-olds stratified by classroom and randomly assigned to condition participated in an eight-week intervention that incorporated…

Individuals with lower proficiency in a second language tend to produce more disfluent speech patterns in the second language. Speech disfluencies refer to interruptions in the forward flow of speech and are distinct from the colloquial use of "fluency," to characterize knowledge of a language. Prior research indicates that some speech…

This dissertation investigated how a bilingual's experiences can affect how their first language pronunciation can differ from monolingual speakers of their two languages. We used a methodology incorporating quantitative phonetic measurements of voice onset time and vowel formants, grammar and vocabulary tests, and qualitative measures of language…