<p>While pronunciation has previously been described as a neglected skill in the second language classroom, a growing body of literature has demonstrated that pronunciation training improves students’ productions (Derwing & Munro, 2005). Mispronunciations have been shown to impact comprehensibility, intelligibility, and accentedness (Derwing & Munro, 2009). As pronunciation instruction methods have begun to be the subject of empirical research, Visual Feedback (VF) has begun to emerge as a novel method for teaching pronunciation. This method has been shown to be particularly effective for teaching voice onset time (VOT), a characteristic of voiceless stop consonants (e.g., /p, t, k/). Worth noting, English and Spanish differ concerning VOT, with English employing long VOTs (30-100ms) and Spanish short VOTs (0-30ms) (Lisker & Abramson’s, 1964). Previous research has focused exclusively on employing VF for shortening VOT, although there are some compelling reasons to question whether the size and nature of the effect would be similar for lengthening VOT. The present study examines the potential effectiveness of VF as a means of lengthening the VOT of Spanish learners of English.</p> <p>The participants of the study were twenty-six students from a large Colombian university. The experiment design consisted of a pretest, three VF interventions, a posttest, and a delayed posttest. The tests were composed of two tasks, differing in their complexity: recording words in isolation and words in utterances. Stimuli consisted of English words (n= 4266) with word-initial voiceless stops (/p, t, k/). Stimuli were controlled for stress, following vowel, and word familiarity  and were measured for VOT using Praat (Boersma & Weenink, 2022).</p> <p>Results from statistical analysis coupled with a visual inspection of the data indicated that the experimental group performed similarly in the three stages of the study and that the visual feedback paradigm did not result in changes in VOT. However, some degree of variation was found among the participants concerning their average VOTs. While some participants showed an overall increase (i.e., improvement) in English VOTs for the three phonemes /p/, /t/, and /k/ over time, other participants did not. In general, most of the participants produced English-like VOTs in the pretest, constituting a degree of ceiling effects. The rate of exposure to the target language and the saliency of English are factors that could have played a role in the development of the VOT scores of the participants before the study. Therefore, the discussion focuses on both the nature of the individual variability and the theoretical implications of ceiling effects found in the current study versus the lack of ceiling effects in other studies with similar populations.</p>

<p>This study examines the distribution of adverbs among child heritage speakers of Spanish. As demonstrated by previous research, the grammar of Spanish heritage speakers can be compared to that of monolingual speakers, but with slight differences in their use and interpretation that can occur given their language dominance, usage, and exposition to the heritage language (Camacho & Kirova, 2018). In adverb placement, a relevant difference comes with verb-raising, a syntactic feature that allows the verb (V) to move in the sentence, and that is common in romance languages, but uncommon in morphologically poor languages such as English (Camacho & Sanchez, 2017; Guijarro-Fuentes & Larrañaga, 2011). Other differences in adverb distribution also stem directly from their semantic use and interpretation (Zagona, 2002), differences that may create instances of cross-linguistic influence or transfer between English and Spanish grammars. Hence, this study intends to study the extent to which these phenomena are produced in adverb placement, considering the patterns of language dominance, use, and exposure of the participants and current bilingual research discussing language transfer in bilingual grammars. Hence, an elicited production task was administered to 14 child heritage speakers of Spanish from the U.S. Midwest and to a comparison group, 25 child monolingual Spanish speakers from Mexico. Results suggest that child heritage speakers behave differently in their production of adverb placement compared to monolingual speakers, showing lower accuracy and little use of verb-raising structures that allow them to produce the post-verbal adverb position Sub-Verb-Adv-Obj. These findings suggest a different developmental path in the acquisition of adverb placement for heritage children in comparison to that of monolingual children.</p>

<p dir="ltr">The present dissertation addresses the gap of how the three contextual variables (power, distance, and imposition) affect the use and perception of pitch range and final pitch contours in Central Peninsular Spanish polar questions. The methodological approach in this dissertation combines a production experiment in the form of a contextualized sentence-reading task (e.g., Brown et al., 2014; Henriksen, 2013) and a perception experiment using a pragmatic judgment task (e.g., Nadeu & Prieto, 2011). Both tasks systematically incorporated a set of situations that included the contextual variables of power, distance, and imposition. Thus, this dissertation provides a systematic analysis of power, distance, and imposition to investigate their influence on the use and perception of pitch range and pitch contours. To analyze pitch in the production experiment, a categorical analysis of final pitch contours (e.g., low-rising contour) and a quantitative analysis of prosodic features (i.e., pitch range and its conversion into semitones) were conducted. For the perception experiment, analyses included the comparison of linear mixed models to examine the perceived degree of politeness.</p><p dir="ltr">The findings presented in this dissertation support the Frequency Code Hypothesis in that they showed the relevance of pitch for signaling and perceiving politeness in requests in Spanish. The results from the production experiment suggested there are no effects of power, distance, and imposition on the selection of final intonational contours. Regarding the analysis of pitch range, the results from the production experiment indicated that the use of greater pitch range was associated with an increase in the social distance between the speakers. In the perception experiment, the results indicated that an increase in pitch range was directly associated with an increase in the perceived degree of politeness. Furthermore, the findings from this dissertation provided evidence for including a systematic analysis of the contextual variables of power, distance, and imposition to conduct analyses within the politeness framework instead of analyzing the formal/informal dimension in isolation The overall results of this dissertation contribute to the understanding of how suprasegmental features are employed in showing and perceivicing politeness.</p>

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