How do infants learn about the formal properties of language using only cues they can access in speech? And what intuitions do they bring to the learning problem? Chapter 2: To explore whether current notions of statistically-based language learning could successfully scale to infants' linguistic experiences "in the wild", we implemented…

Across three experiments, the current study explored how accented speech and coarticulation impact how bilingual listeners comprehend code-switches in speech. Eye-tracking methodology was used to compare responses to single-language and code-switched sentences. Experiment 1 observed how accented speech influenced the costs involved in…

The current study investigated the effects of a novel, research-informed intervention on listening comprehension skills of students identified as English Language Learners and the parental self-efficacy of their parental learning partner. Twenty-six student-parent dyads were split into two groups; one that participated in sixteen listening lessons…

The digital age has profoundly changed the film industry and how consumers are able to access media. To foster language development, this mixed methods study takes advantage of this technological progress and investigates how an audiovisual media-based curriculum can be designed for and implemented in an intermediate German language course. In…

Speech is a complex, redundant and variable signal happening in a noisy and ever changing world. How do listeners navigate these complex auditory scenes and continuously and effortlessly understand most of the speakers around them? Studies show that listeners can quickly adapt to new situations, accents and even to distorted speech. Although prior…

In two visual world eye-tracking experiments, this dissertation examines the role of literacy on predictive processing during spoken language comprehension. Previous studies have shown that comprehenders can use morphosyntactic cues available in the input to generate predictions about upcoming information. Recent key findings also suggest that…

This dissertation explores clear speech which is defined as a specific speaking style people adopt when fluent communication could be compromised for various reasons. Although acoustic properties and their perceptual benefits of clear speech produced by monolingual speakers of English are well documented, there has only been a small body of past…

Pitch discrimination, or the ability to differentiate stimuli using auditory frequency, may be an important correlate of language acquisition. Research consistently finds that children with autism spectrum disorder (ASD) have differences in auditory discrimination abilities. However, studies linking these abilities to delays or impairments in…

In the current globalized world, English is an international language that makes it possible for people from different language backgrounds to communicate with each other. In this situation, English users in EIL (English as an international language) should be able to comprehend various accents spoken by English speakers from all over the world.…

The current study explored individual differences in sensitivity to sub-phonemic variation of acoustic cues in the perception of a native language (L1) category in order to test the hypothesis that second language (L2) learners' different sensitivity to the L2-relevant acoustic dimension in L1 perception could explain individual variability in…

Usage-based Phonology proposes that language users' knowledge is stored in the form of exemplars reflecting experience of language usage. Exemplars encompass all visual and auditory information perceived during a language interaction, but few studies have examined the role that visual information plays. This dissertation addresses this question…

The Perceptual Assimilation Model (PAM) (Best, 1995) claims listeners directly perceive articulatory gestures of the vocal tract rather than acoustic/auditory signals. Accordingly, the articulatory similarities and discrepancies between native and non-native sounds determine the perceptual assimilation patterns of non-native sounds. This study…

The purpose of this quasi-experimental, mixed-methods study was to address the gap in understanding regarding second language (L2) comprehension of stories by using a taxonomical approach based on Anderson and Krathwohl's (2001) revised taxonomy that includes multiple levels of cognitive processing to provide insight into L2 learners' depth of…

The use of the audio medium (e.g., audiobooks and podcasts) is proliferating in everyday and educational contexts. Yet, research investigating text processing in audio compared to the more commonly used print medium is limited in scope. Specifically, the research so far has majorly focused on younger learners or English language learners,…

This research studied the impact of language barriers and cultural experiences on students' perceptions at the University of North Texas. The population of this study were students who had taken a class with a non-native speaking instructor and those who hadn't. Following a mixed-method research approach, online surveys were distributed to the…