The tantalizing prospects of learning benefits from multimodal conditions on second language (L2) learning in general, and L2 vocabulary development in particular, have important implications. Indeed, opening a language learning app on any device provides the immediate experience of simultaneous input modalities, and a wide range of input types.…

The present dissertation reports two experiments that examine implicit and explicit language learning methods and their impacts on early vocabulary, grammar, and phonological acquisition, in addition to working memory, proactive/reactive control, and fluid intelligence, as well as learner motivation. Experiment 1 investigated adult L2 acquisition…

The purpose of this qualitative research was to gather information needed to produce professional development information for early childhood educators for the identification of students who may need speech-language therapy. A concentrated focus was primarily on needs for speech therapy based on specific language impairments or delays in language…

Referential expressions such as pronouns are frequently used in conversations, and native speakers seem to understand who these expressions refer to effortlessly. Although the process of pronoun resolution seems to be easy, interpretations of pronouns are dependent on various sources of information from the discourse including morphosyntax (e.g.,…

The home environment, which includes the level of organization and stability in the home, plays a crucial role in the development of executive function and oral language skills. For children who live in a low-SES environment, executive function and oral language acquisition are inferior compared to that of students living at other economic levels.…

Technology is ubiquitous and takes many forms. Digital media consumption (e.g., television, video games, etc.) has increased significantly in its prevalence in our lives as well as in social acceptability. However, it has also been consistently implicated in poorer health outcomes. The extent to which cognitive functions are adversely affected by…

Researchers have investigated that different dimensions of word knowledge (breadth versus depth) may play distinct roles in second language (L2) reading comprehension. Yet, little research has addressed how learners' efficiency of accessing those dimensions of knowledge functions in their comprehension (i.e., the issue of knowledge availability…

Previous studies (Collins, 2015; Kennan & Meenan, 2014) have shown how variations in text and task factors and individual reader skills affect performance on reading comprehension assessments. The present study examined whether different presentation conditions (silent reading, watching a video) and response formats (open-ended vs.…

This dissertation aims to identify the locus of L2 processing inefficiency. Previous studies suggest that non-native processing is a specific result of an inefficient predictive mechanism that limits the ability of learners to generate linguistic expectations (Gruter, Rohde, & Schafer, 2014; 2016). Thus, this study employs two distinct online…

The purpose of this body of work was to gain a clearer understanding of the potential cognitive factors that may contribute to Specific Language Impairment (SLI). This study attempted to simulate a performance profile of SLI in typically developing children within a grammaticality judgment task, featuring structures historically difficult (third…

The purpose of this study was to examine the relationship of specific cognitive abilities and reading comprehension across a variety of norm referenced tests that align with Cattell-Horn-Carroll (CHC) theory of cognitive abilities and integrative models of reading. Data from existing studies was analyzed by comparing the relationships of four…

The attainment of basic early literacy skills at an early age is one way to ensure children become proficient readers as adults. Word recognition is an important basic early literacy skill that is related to reading fluency and overall reading competency. Incremental rehearsal (IR) is a flashcard technique that has produced strong outcomes for a…

Prior research has established an executive function advantage among bilinguals as compared to monolingual peers. These non-linguistic cognitive advantages are largely assumed to result from the experience of managing two linguistic systems. However, the possibility remains that the relationship between bilingualism and executive function is…

Researchers have been able to link working memory to many important cognitive abilities throughout the life span. Two of the unanswered questions about working memory are what cognitive processes function during working memory task performance and how do these processes directly relate to intelligence? A recent model (Unsworth & Engle, 2006)…

Previous research demonstrates enhanced speech perception abilities for typically hearing and hearing-impaired listeners when speakers use clear versus plain speech, particularly in the presence of background noise. To date, very few studies have investigated the effects of noise on word learning and no studies have examined the effects of clear…