This dissertation study explores a young Japanese heritage language speaker's learning process of formal writing in Japanese. With a rapid increase in immigrants into the U.S. and growing importance of diversity, many researchers have shown interest in immigrant children, i.e., heritage speakers, from educational and research perspectives and have…

It is acknowledged that English language learners (ELL) perform lower than their non-ELL peers and that their lack of language acquisition impacts their graduation rates. However, the approaches taken to reduce the achievement gap between ELL and non-ELL students varies widely. To maximize ELL graduation rates, content area and ELL teachers need…

This dissertation examines native speakers' word recognition of, differentiation between, and social attitudes toward varieties of Arabic. It is a particularly interesting test case because of the Arabic unique regional variation situation and the available literature lacks data on how Arabic speakers perceive different accents, with a particular…

Research shows that sojourning L2 learners are often eager to speak with their native-speaker peers, but they may not realize how these interactions differ from their experiences in the L2 classroom. Using the Communication Accommodation Theory (Giles & Ogay, 2007) as a guiding principle, this mixed-method study aims to, at two different time…

The goal of this study is to contribute to the field of Japanese pedagogy by examining how Japanese native speakers and learners of Japanese as a foreign language with American cultural backgrounds take stances in discussions in Japanese. As stancetaking is a fundamental human behavior (Du Bois & Karkkainen, 2012; Iwasaki, 2015; Kiesling,…

Counterfactuals are a type of conditional sentences used to convey situations that do not correspond to reality. Tense morphology is a core ingredient to encode counterfactuals in English and most Indo-European languages. Mandarin Chinese (hereafter Chinese) lacks tense morphology and does not require counterfactuals to be formally distinguished…

This study investigates the acquisition and maintenance of periphrastic and se-passives in second language (L2), heritage (HS), and (Spanish-dominant) native Spanish speakers (NS) by addressing: (i) How accessible are Spanish periphrastic passives (which also exist in English) and se-passives (unique to Spanish) for L2ers and HSs in production?…

This dissertation investigates the interplay between the implicit knowledge that learners have of a nonnative language and their processing of that language, examining two types of relative clauses (RCs) in English: gapped RCs (e.g., "the man that they hired") and resumptive RCs (e.g., *"the man that they hired him").…

Research on language learners' attention suggests that manipulating attention is beneficial in the language learning process as it facilitates the "noticing" of specific linguistic aspects. The current study investigated the effects of directing learners' attention to segments and prosody in English phonetic training. Korean learners of…

The problem is English language learners (ELLs) in adult education and college programs in the United States need support in achieving learning goals due to a lack of qualified English as a second language (ESL) teachers in their home countries. The purpose of this basic qualitative study was to understand how ELL students in Indiana perceive the…

Second language learners constitute a significant and expanding portion of the global population and there is a growing demand for tools that facilitate language learning and instruction across various levels and in different countries. The development of large language models (LLMs) has brought about a significant impact on the domains of natural…

Upon acquiring or learning another language, cross-linguistic influence (CLI) is an inevitable phenomenon with which a bilingual speaker lives. One key aspect of CLI is its bidirectionality, flowing between both the first (L1) and second languages (L2) mutually affecting each other. However, investigations of L1 CLI on L2 have dominated previous…

Arabic emphasis refers to the production of consonants resulting from a primary constriction in the dental or alveolar region and a secondary constriction in the back of the vocal tract, recognized as 'Emphatic.' These have contrastive consonants produced in the dental or alveolar region, recognized as 'Plain.' The existing research on emphasis in…

A key goal in World Language Education (WLE) is challenging learners' preconceived notions about other cultures, aligning with the leading intercultural competence models, national language teaching standards, and the emerging Transformative Language Learning and Teaching (TLLT) paradigm. However, challenging stereotypes remains a concern to…