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Everyday speech is littered with disfluencies such as filled pauses, silent pauses, repetitions and repairs which reflect a speaker’s language production difficulties. But what are the effects on language comprehension? This thesis took a novel approach to the study of disfluencies by combining an investigation of the immediate effects on language processing with an investigation of the longer-term effects for the representation of language in memory. A series of experiments is reported which reflects the first attempt at a systematic investigation of the effects of different types of disfluencies on language comprehension. The experiments focused on the effects of three types of disfluencies—ers, silent pauses, and repetitions—on the comprehension of subsequent words. Critical words were either straightforward continuations of the pre-interrupted speech or a repair word which corrected the pre-interrupted speech. In addition, the effects that occur when er, repetition, and repair disfluencies themselves are processed, were assessed. ERPs showed that the N400 effect elicited in response to contextually unpredictable compared to predictable words was attenuated by the presence of a pre-target er reflecting a reduction in the standard difference where unpredictable words are more difficult to integrate into their contexts. This finding suggests that ers may reduce the extent to which listeners make predictions about upcoming words. In addition, words preceded by an er were more likely to be correctly recognised in a subsequent memory test. These findings demonstrate a longer-term consequence for representation which may reflect heightened attention during processing. Silent pauses did not affect the N400 but there was some indication of an effect on recognition memory. Repetition disfluencies did not affect the N400 or recognition memory. These findings demonstrate the importance of the nature of the disruption to speech. For all types of disfluent utterances, unpredictable words elicited a Late Positive Complex (LPC), possibly reflecting processes associated with memory retrieval and control as listeners attempted to resume structural fluency after any interruption. Ers themselves elicited standard attention-related ERP effects: the Mismatch Negativity (MMN) and P300 effects, supporting the possibility that ers heighten attention. Repetition disfluencies elicited a right posterior positivity, reflecting detection of the disfluency and possibly syntactic reanalysis. Repair disfluencies elicited an early frontal negativity, possibly related to the detection of a word category violation, and a P600 effect, reflecting syntactic reanalysis. The presence of an er preceding the repair eliminated the early negativity, but had no effect on the P600 suggesting that ers may prepare listeners for the possibility of an upcoming repair, but that they do not reduce the difficulty associated with reanalysis. Taken together, the results from the studies reported in the thesis support an account of disfluency processing which incorporates both prediction and attention.

Thesis (Ed.D.)--Boston University.

Rationale : Investigating the relationship between working memory and reading comprehension will lead to an improved understanding of the nature of working memory and will reveal how working memory contributes to reading comprehension failure. A pattern of working memory deficits will determine if ‘signature’ working memory profiles exist which will assist in the diagnosis and treatment of children with reading comprehension difficulties. Aims : (1) To explore the relationship between working memory and reading comprehension to determine if there are ‘signature’ working memory profiles that distinguish subgroups of Grade 5 English language learners with different comprehension capabilities. (2) To determine if a domain-specific or general working memory system is implicated in reading comprehension. (3) To explore the particular role played by the episodic buffer zone in reading comprehension. Method : Eighty Grade 5 English learners were tested on the GORT-4, AWMA and CELF- 4 Recalling Sentences Subtest. Based on their accuracy/decoding and comprehension scores on the GORT-4, participants were assigned to one of four reading ability groups: Skilled Reader Group; Reading Disabled Group; Poor Comprehender Group; or Poor Fluency Group. Comparison of mean standard scores determined how the four reading ability groups fared on the five memory components. Correlation and regression methods investigated the relationships between the five working memory variables and reading comprehension across the four reading ability groups. Results : Working memory plays a role in reading comprehension. The Skilled Reader group displayed intact working memory profiles, whilst the Reading Disabled group performed in the low average range on four working memory variables and below average on the fifth viz. sentence recall. The Poor Comprehender group’s working memory performance resembled that of the Skilled Reader group on two working memory variables. The Poor Fluency group performed below average on visuo-spatial short-term memory. These findings gave evidence of the inter-play between domain-specific and domain-general components of working memory during the complex task of reading comprehension. In addition, the findings highlighted the predictive role of sentence recall, as well as that of verbal working memory in reading comprehension. The episodic buffer was shown to play an important binding function between fluid and crystallised knowledge. The results suggested that reading comprehension was affected by a learner’s working memory capacity, however, working memory alone did not account for variations in performance. Lower-order and higher-order cognitive processes, as well as the interaction between fluid and crystallised knowledge appear essential to authentic reading. This has ramifications for prevention and remediation of reading comprehension deficits and underscores the important role of the speech therapist in literacy promotion.

Thesis (Ed.D.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / PROBLEM: The purpose of this study was to investigate the relationship of high school readers' attitudes and reading comprehension abilities to critical reading responses. The two topics of communism and Negro racism were chosen for the articles about which critical reading responses were to be made. PROCEDURE: Four articles were written on each topic to provide information upon which students could make judgments. A set of questions consisting of three types, fact-opinion, interpretation of conclusions, and evaluation of arguments, was constructed for each article. Attitude scales on each of the topics were also constructed. A test-retest procedure verified their reliability. Standardized tests administered to the population were: the NelsonDenny Reading Test, Revised, Form A; the Watson-Glaser Critical Thinking Appraisal, Revised, Form YM; the Otis Quick-Scoring Mental Ability Test: New Edition, Gamma Test. The experimental population comprised 270 students, 145 boys and 125 girls, in ten college preparatory English classes in grade eleven. The author administered the attitude scales and the standardized tests. After completion of the testing the classroom English teachers presented the articles and questions on alternate days over a period of three weeks. The topics were also alternated. Each student responded to every question [TRUNCATED] / 2031-01-01

Thesis (Ed.D.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / The purpose of this study was to determine the effect of metacognitive strategy reading instruction on sixth grade students' content reading comprehension. Forty-one students in two sixth grade social studies classes participated in the study. Twenty students in the treatment social studies class were taught the purpose and value, as well as the techniques of self-monitoring of the summarizing strategy to help them recall and organize key information from their social studies textbook. Twenty-one students in the control group were taught summarizing as a cognitive reading strategy without the metacognitive components of value, purpose, and selfmonitoring. The two social studies classes had no significant differences on pre-test measures of formal and informal reading comprehension. After a 1 0-week study period, the posttest results of the two groups were compared to determine the effects of the strategy instruction on the students' content reading comprehension. Significant differences were found on the posttest scores of metacognitive strategy knowledge and informal reading comprehension measures between the treatment and the control group that could be attributed to the metacognitive strategy instruction. Metacognitive strategy instruction was the most effective in increasing the reading comprehension of high-ability treatment students, although it also increased the content comprehension of the low and average ability readers. These findings suggest that metacognitive strategy instruction including the value, purpose, and self-monitoring of the summarizing strategy is more effective in increasing reading comprehension than the summarizing strategy alone. Students in the treatment group were observed beginning to use the summarizing strategy independently in their social studies class. Thirteen students in each class were interviewed about their use of reading strategies, their strengths and weaknesses as readers, and their opinion and approaches to the social studies textbook. These same students were observed reading the social studies textbook using a think-aloud procedure and in their social studies class, to better determine if there were any differences between strategies mentioned and those used in the process of reading. Students in both the control and treatment groups mentioned the use of more pre-reading strategies than they actually used while reading. These students used more during and after reading strategies while reading in their social studies class. / 2031-01-01

This study is a mixed methods analysis of reading processes and language experiences of deaf and hearing readers. The sample includes four groups each with fifteen adults—identified as: deaf/high-achieving readers, deaf/struggling/non-academic readers, hearing/high-achieving readers, and hearing/non-academic readers. The purpose of this study is to identify factors related to reading achievement and to explore themes that emerge in the language experience and reading behaviors. The quantitative measures of the study are: a background demographics form, reading comprehension assessment, phonological skills assessment, metacognition assessment and think-aloud discussion with a reading strategy checklist where readers are guided through the process of decoding and interpreting the scene from a play. Scores from the reading comprehension assessment are correlated with other assessments and demographic statistics to identify factors of achievement. Similarities and differences between groups of readers are tested with one-way ANOVAs to identify mean differences in scores according to achievement level (skilled/struggling) and hearing status (deaf/hearing). Qualitative data are measured by collecting, reviewing and identifying shared themes in the transcripts of reading background interview and think-aloud discussions (open coding), relating codes and categories (axial coding), and determining a central theme (selective category). Results shows that deaf high-achieving readers perform at similar levels as hearing high-achieving readers, and that for all participants, phonology and metacognition are related to reading achievement; there are similarities and differences in their conceptualization of language; and access to varied instructional strategies and meaningful language experiences is an overarching theme in effective reading.

In study III, two event-related-potential (ERP) experiments show a clear modulation from preceding object noun on the early ERP components of the following object picture that are known to be associated with perceptual processes and provide by far the strongest evidence that semantic processing cannot account fully for the congruence effects supposed to indicate color representation. / In summary, color representaion is found to be present not only for color information implied by the global phrase context but also for color information irrelevant to the global phrase context, not only for words with direct and concrete associations with color but also for words where such associations are indirect and less concrete. ERP results also provide strong support that color simulation does occur at the perceptual level as argued by embodied cognition theorists and cannot be attributed totally to semantic processing. Briefly, the present research provides a rich dataset and valuable insights deepening the understanding of perceptual color simulation in phrase and words. / Results from all three experiments in the first study showed a robust demonstration of the activation of perceptual representation of color information or the presence of color simulation in phase processing. Results from primetarget stimulus-onset-asynchrony (SOA) manipulation provided time course information of the relative activation of the two types of colors. / The present research was conducted to give a systematic treatment of color simulation in language processing to enrich understanding of perceptual simulation. Two main questions have been addressed here, namely 'what is the time course of color activation in language unites such as noun phrase and abstract words? ' and 'do linguistic simulation and perceptual simulation (especially the unconscious part) of color co-exist in language understanding? ' / The second study involving three experiments, further extended the finding in Study I to demonstrate the presence of color simulation to an even smaller and abstracter linguistic unit of single words. Results from SOA manipulation indicates a more rapid activation of color information for the words psychologically-related to color, followed by activation of color for object nouns, and slowest color activation for verbs. / Lu, Aitao / Adviser: Wai Chan. / Source: Dissertation Abstracts International, Volume: 72-11, Section: B, page: . / Thesis (Ph.D.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 89-99). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese; some appendices include Chinese characters.

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