Dialogue act (DA) classification plays an important role in understanding, interpreting and modeling dialogue. Dialogue acts (DAs) represent the intended meaning of an utterance, which is associated with the illocutionary force (or the speaker's intention), such as greetings, questions, requests, statements, and agreements. In natural language…

Speech remediation by identifying those segments which compromise the quality of speech content can be performed by correctly identifying portions of a recording which can be deleted without diminishing from the overall quality of the speech, but rather improving it. Speech remediation is especially important when it is heavily disfluent as in the…

In phonetics research, language alternation--including code switching (speaker-initiated) and cued switching (researcher-prompted)--can be used as a tool to investigate various aspects of speech production and perception in bilingual or multilingual speakers (Bullock & Toribio, 2009a). Studies on the production of voice onset time (VOT) during…

All language use reflects the user's social identity in systematic ways. While humans can easily adapt to this sociolinguistic variation, automatic speech recognition (ASR) systems continue to struggle with it. This dissertation makes three main contributions. The first is to provide evidence that modern state-of-the-art commercial ASR systems…

This dissertation investigated the speech productions of the implosive -r consonant by U.S.-born Puerto Rican and Dominican Heritage Language Spanish speakers in New York. The following main research questions were addressed: 1) Do heritage language Caribbean Spanish speakers evidence the same variation with the /?/ consonant in the implosive…

Language learners need to understand and apply appropriate discourse as part of the process of attaining "communicative competence" (Canale, 1983) needed to fulfill academic and social-adaptive functions. Students who are able to apply discourse strategies within the classroom demonstrate higher levels of metacognition and critical…

A renewed focus on foreign language (FL) learning and speech for communication has resulted in computer-assisted language learning (CALL) software developed with Automatic Speech Recognition (ASR). ASR features for FL pronunciation (Lafford, 2004) are functional components of CALL designs used for FL teaching and learning. The ASR features…

This longitudinal qualitative study examined how four preservice elementary teachers used language to construct professional identities, learn within relationships, and take risks in the classroom during their final three semesters in teacher education coursework and field experiences. My female participants were former students of mine in the…