An experiment was conducted to examine the effects of task complexity and learner proficiency in native speaker (NS)/non-native speaker (NNS) interaction. A total of 24 Japanese NSs and 12 NNSs subjects representing three levels of proficiency, low (n=4), intermediate (n=4) and advanced (n=4), were randomly assigned to dyads to complete two communication tasks, each differing in relative complexity. Three composite variables made up of 32 dependent variables were used to measure the frequency of formal reduction, communication and repair strategies across both tasks. The hypothesis that NSs would simplify their speech and use a higher frequency of interactional modifications in accordance with the level of proficiency of the NNSs and the complexity of the tasks was tested. The results for the first independent variable of proficiency, indicated there was a trend showing that NSs simplified their speech when addressing NNSs in general and in particular, when addressing lower level learners of Japanese. The results for the second independent variable of task complexity revealed that there was a significant effect on the number of reduction, communication and repair strategies used on the more complex task for all groups. These findings are discussed in relation to previous research on NS-NNS interaction and implications for second language teaching are explored. / Education, Faculty of / Language and Literacy Education (LLED), Department of / Graduate

For over two decades, studies on task planning and its role in second language learners' oral performance have shown that the opportunity to plan for a task generally improves learners' speech (Ellis, 2005). It has been hypothesized that the opportunity to plan for a task reduces cognitive load during language processing, thus allowing learners to attend to various aspects of language, and that this enhanced attention, in turn, results in more successful task performance. However, one limitation to this task planning research to date it that most studies have examined the effects of planning before task performance, while largely ignoring the effects of planning that occur during task performance (Yuan & Ellis, 2003). Another limitation in planning research is that findings have been based exclusively on external observation and measurement of learners' oral production; we know little about what strategies learners use that may result in higher-quality speech. The participants in this study were intermediate and high-intermediate learners of Japanese. They were divided into experimental groups and performed a narrative task under different task conditions. Participants received a set of pictures and were asked to retell the story in Japanese. To examine the effects of planning on task performance, fluency, complexity, and accuracy in the participants' speech were analyzed. For the analysis of planning strategies, retrospective interviews were given to a group of participants from each planning group immediately after the task performance. The results revealed that there were no significant differences in participants' oral production across planning conditions, except in the area of lexical complexity (participants without a pre-task planning opportunity produced narrative stories with a greater variety of vocabulary than those who planned before the task). A trade-off effect between lexical complexity and accuracy was found when participants planned either before or during the task. Another trade-off effect was found between lexical complexity and fluency for the participants with on-line planning only. The analyses of strategy use showed that second language learners generally selected similar strategies regardless of planning conditions. These results provided important pedagogical implications and suggested useful future research directions.

A learner of L2 normally attains a certain level of competence which then stagnates, thereby rarely accomplishes native-like competence of the target-language (TL). This bottleneck effect is accounted for through the E-Tether Theory (ETT), which is the main thesis of this dissertation. The ETT argues that the L2 E-grammar of a learner's community exerts a centrifugal force that draws the I-grammar of the learner towards it. This force, christened as the "E-tether", stems from the learner's identification with his speech community and from the linguistic input provided by the local E-grammar. When the local E-grammar is not identical to the TL grammar, the E-tether is a double-edge sword that encourages the development of the L2 I-grammar in the initial stages, but then prevents the I-grammar from progression towards the TL. By considering how social environment affects the I-grammar of individual learners through E-languages, the ETT provides a more comprehensive account to the bottleneck effect.;The validity of the proposed ETT is examined in this dissertation through two empirical studies: (i) the acquisition of English consonant clusters by the native Cantonese speakers in Hong Kong, and (ii) the acquisition of the same structures by the native Cantonese speakers in Guangzhou. In the two studies, the ETT is tested by seeing whether the individuals in the two cities attitudinally incline towards the phonological patterns of Hong Kong English (HKE) and of Guangzhou English (GZE), which are the E-languages of the two communities. The E-grammar in each city is generalized from the productions of consonant clusters by 10 speakers and is analyzed under the framework of Optimality Theory; the attitudes towards the E-grammar are obtained through a language attitude test implemented to 129 participants in Hong Kong and 66 in Guangzhou. Two findings emerge from the results. First, there is a tendency in HKE and in GZE to produce syllabic obstruents and to devoice word-final obstruents. Both patterns are also attitudinally accepted by the participants in the two cities. Second, when there is more than one strategy in the local E-grammar to avoid consonant clusters, the one that better preserves intelligibility is more likely to be accepted. The observed acceptance of the L2 speakers towards the "non-standard" L2 patterns can hardly be explained if one does not acknowledge the role of the local E-grammar. The findings thus lend support to the ETT.;Besides the Hong Kong study and the Guangzhou study, there is evidence showing that the ETT can work in a range of social contexts, and can apply to domains other than phonological acquisition.

Electropalatography (EPG) is a computer-based tracking system designed to provide real-time visual biofeedback of articulatory contacts occurring during speech production. Historically, EPG technology has proven functional within the treatment and assessment of speech disorders however, application of EPG technology to assist in second language learning has remained limited. The present thesis is part of a larger study examining the effectiveness of using EPG as an advanced instructional tool for assisting second language (L2) learners of German. Fricative productions ([ç], [x], /s/, and /∫/) within real words were gathered from 12 native English speakers enrolled in a second semester university level course to learn German. Speech productions from student participants were compared against native German speakers' productions collected in a previous study, using electrode mappings, percentages of regional contact, and center of gravity measures. These measures revealed different patterns of palatal contact between fricative sounds, between individual subjects, and cross-linguistically. Fricative sound mappings varied visually as speakers generally produced [ç] and [x] with significantly less palatal contact than when producing /s/ and /∫/. Variation across individual subjects was identified as some produced sounds with nearly no posterior palatal contact while others produced sounds asymmetrically or with decreased overall contact. Cross-linguistic differences were apparent as non-native German speakers frequently contacted greater numbers of electrodes with greater force, compared to the natives. It is anticipated that the information included in this thesis will provide insights into the role of EPG technology as an instructional tool for L2 learners.

Electropalatography (EPG) is a computer-based system that tracks and measures contact patterns between the tongue and palate during speech production. The present study is focused on how the lingua-palatal contact patterns of native English speakers learning German as a second language (L2) differ as a function of task type. The fricatives ich-Laut [ç] and ach-Laut [x] were used as the target sounds, placed in nonsense words, short sentences, and spontaneous speech. The productions of the fricatives in the varying speech tasks were gathered from 12 university students enrolled in their second semester of a university level course of German. Comparisons were made using electrode mappings, percentages of regional contact, duration, and center of gravity measures. Duration measures showed that nonsense words were found to have the greatest duration for both fricatives when compared to the other task types. Percentage of activation measures showed that [ç] presented with similar activation in the medial and posterior regions of the palate across task type, whereas the activation in medial and posterior regions for [x] were found to differ more significantly across task type. Specifically, short sentences and spontaneous speech had similar posterior activation, but differed in medial activation, while nonsense words were different in both regions. Center of gravity measures were also greater in short sentences and spontaneous speech compared to nonsense words for [x]. It is anticipated that the data and information in this thesis will provide insights into the role of linguistic task type and EPG technology as instructional tools for L2 learners.

Bibliography: pages 333-356. / This investigation is concerned with what three children remembered or had forgotten of a second language after an interval of two years. An in-depth study, consisting of recognition and recall tests, was made of 13-year-old identical twin girls and their 9-year-old brother, who previously had been English/French bilinguals. A phenomenological approach was taken, which included the children's reaction to the tests, and their description of the personal framework within which the learning and forgetting had taken place. The findings, which are suggestive due to limited data, are: first, cognitive and maturational differences between the children caused the twins to retain more recognition and active recall of French than their brother; second, the twins showed a surprising difference in their recognition of French, pos9ibly caused by affective factors; third, all three children showed strongest recognition in the area of semantics, while in recall they retained phonology best; fourth, in the tests, habit memory and episodic memory were more durable than semantic memory. The investigation is a first step towards understanding how children forget a language in which they have been submersed.

In L2 performance assessment, raters can significantly affect test validity due to rater variability, a source of construct-irrelevant variance in scores caused by differences in raters’ characteristics rather than test takers’ ability. To improve scoring validity, we must investigate what rater characteristics are likely to contribute to rater variability. The current study thus investigated the combined effects of three major rater characteristics, i.e., rater expertise, working memory capacity (WMC), and cognitive functionality, on raters’ scoring performance in L2 speaking assessment. Exploring these questions may increase our understanding of what rater-associated factors contribute to rater variability, thereby shedding light on rater selection, training, and scoring practices. To this end, 90 raters from the US and the UK participated in two parts of the study. In Part I, the 90 raters completed a rater background survey designed to measure their L2 performance assessment-related experience, scored 27 responses from the Aptis speaking test, and completed one verbal working memory task. Hierarchical regression analyses were conducted to explore: 1) the relative contributions of rater expertise and WMC to scoring performance, and 2) any possible interaction between the two characteristics in their joint influences on scoring performance. Results from the analysis indicate that rater expertise had a significant effect on raters’ scoring accuracy. However, WMC was not found to significantly influence raters’ scoring performance. In addition, no significant interaction was found between rater expertise and WMC, which suggests independent influences of these two characteristics on scoring performance. In Part II, six out of the 90 raters were randomly selected to participate in a cognitive lab session, where they scored three Aptis spoken responses and verbally reported their thinking process during scoring. The raters’ reports were coded and analyzed based on a hypothesized taxonomy of rater strategies invoked in the L2 scoring process. Fourteen major strategies were identified from the raters’ verbal reports. Differences were also found in the expert and novice raters’ quantity and quality of strategy use. These findings have revealed the mental mechanisms underlying raters’ scoring performance and associated differences in the raters’ strategy use to different levels of rater expertise.

The importance of accent reduction to those who are learning English as a second language cannot be understated as it has direct and indirect impacts on credibility and income. This study is an evaluation of an instructional technique involving visual feedback through an electropalatography device to assist speakers in acquiring the /r/ and /l/ sound contrast in American English and whether or not that progress varied across speech task type or word position. This study involved four native Japanese participants in their first semester at the English Language Center located at Brigham Young University. Each subject participated in 7 45-minute sessions over the course of 4 weeks. The sessions used a hybrid instructional approach which included traditional auditory feedback combined with intermittent, real-time visual feedback provided by the EPG sensor. Measurements of the third formant of each target sound was extracted from baseline, posttreatment, and follow-up recordings using Praat acoustic analysis software. Overall, all subjects showed a greater contrast in F3 from the baseline assessment to the posttreatment assessment. The subjects demonstrated a greater contrast in F3 during the word task type and also when the phonemes were in the final position of words.

This study aims to investigate, describe and discuss the views of group new arrived pupils from the preparatory training to the compulsory school level. They all came to Sweden and started in the preparatory training there they also started studying Swedish as a second language. This study aims to investigate the creation of identities and how the pupils socialize in the Swedish school. The study has been conducted with respect to the pupil´s own perspectives and what they consider important. The methods used are interviews together with an interpreter. Their voices are used and described in this paper. Their names and the school´s name have been used anonymous. One must take into consideration that there is no objective of being neutral or to generalize the results to any other group. The pupils are convinced that second language acquisition is the key to success although their first language - the Arabic language is still symbolized as their identity. They are still working on their identities, their language acquisition and adaptation to expectations in different situations. They always will be seen as multidimensional personalities.

This degree project aims to investigate which methods five school teachers, in compulsory education, integrate into their practice when teaching ESL learners vocabulary through reading. Moreover, it aims to find out if the reported teacher practices reflect what is currently viewed as effective vocabulary instructions. The research question that guided this study was, what methods or underlying theories do ESL teachers, in South Sweden, find useful when teaching vocabulary through reading? The research used classroom observations, individual interviews, together with a thorough analysis of relevant research on the subject of SLA. Moreover, despite the vast research in this area regarding effective practices of vocabulary acquisition, teachers tend to use old fashioned, and simple methods when teaching and assessing vocabulary acquisition. Underlying reasoning is said to be lack of time, or knowledge of how to incorporate efficient practices in their teaching. To conclude, we believe that teachers would benefit from receiving further education on how to incorporate potent practices, so that they are able to more efficiently integrate them into their current language learning activities.