The dissertation presents a pioneering investigation into child speech among Bikolano children. It aims to address the underdescription and underdocumentation of Child Bikol as spoken in the Philippines. Bikol, an Austronesian macrolanguage, often coexists with more dominant languages, making Bikolano children both emergent multilinguals and…

There is a growing body of research from various perspectives in heritage language (henceforth HL) acquisition as an emerging field. Some studies proposed that HL acquisition is a differential acquisition compared with the baseline language (i.e., the language spoken by the parents or caregivers) (Kupisch & Rothman, 2018; Dubiel &…

This project examined the acquisition of third person accusative clitics in Spanish by Chinese-speaking learners. Specifically, it focused on the role of cross-linguistic influence and patterns of language exposure and use in the acquisition of the syntactic and semantic properties constraining the production and intuition of overt and null…

Universals in natural language have long been a focus of the generative syntactic and typological literature. However, the source of these universals is not clear. Within Chomskyan generative syntactic literature, it is assumed that children are endowed with innate knowledge of language structure (see for example, Lightfoot 1999). However,…

Research on language and cognitive processes in bilinguals over the past few decades has underscored the activation of words in the first language (L1) during comprehension and production of the second language (L2) (e.g., Dijkstra, Van Jaarsveld, & Ten Brinke, 1998; Van Heuven, Dijkstra, & Grainger, 1998; Hermans, Bongaerts, De Bot, &…

This dissertation contributes new data to the debate on the source and manner of transfer in third language (L3) acquisition. The "L1 Status Factor" (L1SF, e.g., Hermas, 2010; Leung, 2002; Lozano-Pozo, 2003) maintains that the transfer source is the native language (L1), whereas the "L2 Status Factor" (L2SF, Bardel & Falk,…

Two-way immersion (TWI) programs are an increasingly popular educational model designed to foster academic achievement and develop high levels of bilingualism, biliteracy, and sociocultural competence (Howard et al., 2018). TWI has been shown to be highly effective at promoting English-language development and academic content learning, as well as…

This dissertation investigates the child language acquisition of Kosraean (ISO 639-3 kos) and English (ISO 639-3 eng) on the island of Kosrae of the Federated States of Micronesia, with the aim of assessing the current vitality status of Kosraean and its strength compared to English. The concerns raised by the community regarding child proficiency…

Infants and toddlers experience the world in interaction with others. Likewise, social interactions are important in learning about math--concepts of number ("one," "two," "three"), space ("on top," "upside-down," "round"), and magnitude ("more," "big,"…

This dissertation investigated how four factors -- the degree of L2 experience, L1 sound structure, age difference in L1 language development and age of L2 exposure -- affect the perceptual cue weighting of duration and spectral differences for English tense-lax vowel contrasts. Four major hypotheses were tested: desensitization hypothesis (DH)…

Prior research has extensively explored audiovisual speech perception and literacy skills in various linguistic contexts. Studies have shown that children's ability to integrate auditory and visual speech cues plays a crucial role in language acquisition and development (Erdener & Burnham, 2013; Lalonde & Werner, 2021). Furthermore,…

This dissertation examines investment in language learning, especially how that investment looks over the entirety of a learner's target language-related journey. It investigates investment, in terms of positive and negative relationships and experiences, both at one point in time and over time, as well as how investment may be linked to a measure…

Phonotactic patterns are generalizations that govern the order of consonants and vowels, within words and syllables. Certain second-order phonotactic patterns--those that relate multiple sounds within a syllable, such as "if the vowel is [near-close near-front unrounded vowel], then [s] can only appear at the end of the…

Multi-Tiered System of Supports (MTSS) is a framework structure implemented within public education designed to provide students with targeted enrichment or remediation needs interventions. The MTSS process and its implementation directly impact the academic success of students. Using interventions when students are academically or behaviorally…

This thesis evaluates the curricula implemented in four mother-tongue based multilingual education programs in the Philippines, Thailand, East Timor, and Cameroon. The method for conducting research in this thesis is based on the five principles to enhance learning presented by the World Bank and the prism model developed by Thomas and Collier.…