Co-speech gesture in monolinguals has been linked to several cognitive processes: prompting memory stores, conveying spatial concepts, searching for lexical equivalents, and supporting rhythm and cohesion. The production of co-speech gesture also occurs in spoken language bilinguals. Studies have demonstrated that bilinguals fluent in American…

American Sign Language (ASL), like many different signed languages, has a systematic way of using pointing signs for multiple types of nominal reference. Possibly the most basic function of pointing is to indicate, direct and modulate reference to physical objects located in proximal and distal areas called exophoric demonstratives. This study…

This study examined the effect of a 1-day, 6-hour key word signing (KWS) workshop on in-service special education teachers' and speech-language pathologists' (SLPs) (a) skill identifying American Sign Language (ASL) signs; (b) skill producing ASL signs; (c) use of KWS in the classroom or therapy room; and (d) perceived changes from taking part in…

Kenyan Sign Language (KSL) is a thriving national sign language used by tens of thousands of signers in Kenya, and which emerged out of two deaf schools in western Kenya in the early 1960s. In this thesis, I provide a thorough description and analysis of the basic phonological components of the KSL lexicon used in the southwestern region of Kenya…

In this dissertation, I examine the nature of object marking in American Sign Language (ASL). I investigate object marking by means of directionality (the movement of the verb towards a certain location in signing space) and by means of handling classifiers (certain handshapes accompanying the verb). I propose that object marking in ASL is…

This dissertation is an examination of gesture in two game nights: one in spoken English between four hearing friends and another in American Sign Language between four Deaf friends. Analyses of gesture have shown there exists a complex integration of manual gestures with speech. Analyses of sign language have implicated the body as a medium…

The broad application domain of the work presented in this thesis is pattern classification with a focus on gesture recognition and 3D hand pose estimation. One of the main contributions of the proposed thesis is a novel method for 3D hand pose estimation using RGB-D. Hand pose estimation is formulated as a database retrieval problem. The proposed…

This dissertation describes the features of co-speech gestures of English/ASL bilinguals and addresses three main questions: 1) How do English/ASL bilinguals gesture differently than non-signers? 2) How do native ASL/English bilinguals gesture differently than non-native English/ASL bilinguals? 3) Do English/ASL bilinguals gesture differently to…

The American Sign Language construction commonly known as "role-shift" (referred to afterward as Constructed Action) superficially resembles mimic forms, however unlike mime, Constructed Action is a type of depicting construction in ASL discourse (Roy 1989). The signer may use eye gaze, head shift, facial expression, stylistic variation,…

The focus of this mixed method study was to investigate the play behaviors, play interactions, and language use--within a bilingual AS L/English classroom--of a Deaf child who is a native user of American Sign Language (ASL). Play is an essential element in all children's development. Previous research suggests that there is a strong relationship…

This dissertation contains three studies that investigate whether attested patterns of constituent order distribution and change in the world's languages can be attributed, in part, to cognitive preferences for some constituent orders over others. To assess these preferences, seven experiments employed an "elicited pantomime" task.…

This dissertation examines depiction in American Sign Language (ASL) presentations. The impetus for this study came from my work as an instructor in an interpreter education program. The majority of ASL/English interpreters are second language learners of ASL, and many of them find some features of ASL challenging to learn. These features are…