For over four decades, International Teaching Assistants (ITAs) have faced criticism by undergraduate students for their linguistic and teaching abilities. One area of research on ITAs' linguistic abilities focused on their pronunciation and generally revealed non-standard patterns of segmental and suprasegmental features (Anderson-Hsieh et al.,…

There is a long-standing debate in the literature about the benefits that acoustic components of Infant Directed Speech (IDS) might have for infants' language acquisition. One of the highly contested features is vowel space expansion, which refers to the enlargement of the acoustic space between the corner vowels /i, u, a/ in IDS compared to Adult…

Purpose: Categorical perception (CP) manifests in various aspects of human cognition. While there is mounting evidence for CP in facial emotions, CP in vocal emotions remains understudied. The current study attempted to test whether individuals with a tonal language background perceive vocal emotions categorically and to examine how factors such…

Purpose: Maturation of the ability to recognize target speech in the presence of a two-talker speech masker extends into early adolescence. This study evaluated whether children benefit from differences in fundamental frequency (f[subscript o]) contour depth between the target and masker speech, a cue that has been shown to improve recognition in…

This dissertation deals with the perception of the aspirated coda /s/ by Spanish L2 learners. Second language research, with some exceptions, focuses on whether L1English-L2 Spanish learners can perceive the aspirated variant, showing that only advanced learners with time spent in s-weakening regions succeed at the task. L2 studies about…

This conversation analytic study offers an empirical analysis of the Japanese turn-initial interjection "are." The interjectional "are" is said to be pragmatized from its use as a distal demonstrative and has been considered as an expression of a speaker's internal state of being surprised at something. In contrast, this study…

Background: Maternal input plays an important role in influencing linguistic development during the first years of life, and it is evident that mothers adapt their language according to their child's characteristics. Recently, it was demonstrated that maternal input addressed to children with sex chromosome trisomies (SCTs) at 8 months of age is…

In this dissertation, I investigate how people navigate ambiguity in everyday speech, with a focus on quantifier-negation sentences. Combining corpus analysis, behavioral experiments, and computational modeling in the Rational Speech Act framework, I explore preferred interpretations of quantifier-negation and examine the contexts and prosodies…

This article describes a simple method to teach pitch, a feature common to both word stress and intonation. The technique can be used by native and nonnative English-speaking teachers and is applicable to students of different levels and language backgrounds. Pronounced as /m/, "mmm" is a sound that should be easy for speakers of any…

This study examined how toddler looking to a discourse referent is mediated by the information status of the referent and the pitch contour of the referring expression. Eighteen-month-olds saw a short discourse of three sets of images with the proportion of looking time to a target analyzed during the final image. At test, the information status…

The human voice is an alive, natural instrument belonging to the human body and most beautiful tool for the individual to express himself. When evaluated from a musical point of view; the human voice, the first known musical instrument in the history of music, is the oldest, most natural and most valuable of musical instruments. This privileged…

Suprasegmental features (i.e., features realized through pitch, volume, and/or duration changes) are particularly difficult for second language learners. This has led to the creation of many different methods of training, often employing the use of experimenter or instructor-created training materials. However, the use of authentic materials for…

Friday sermons portray patterns of lexical cohesion which can demonstrate how effective communication is achieved. This study proposes a model of lexical cohesion that fits the spoken discourse of Friday sermons in the United Arab Emirates (UAE). To that end, a corpus of 25 sermons was analyzed to identify patterns of cohesion and show the impact…

This study investigates L2 comprehension of focus-to-accentuation mapping in English sentences with focus particle "only" by advanced learners of English whose L1 was either Cantonese or Dutch. Two experiments were conducted to examine (a) whether L2 learners could map accentuation to focus; and (b) whether they could perceive…

The current study examined whether or not lexical access is influenced by detailed phonological features during the silent reading of Chinese sentences. We used two types of two-character target words (Mandarin sandhi-tone and base-tone). The first characters of the words in the sandhi-tone condition had a tonal alternation, but no tonal…