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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Phonological Processing in Children with Dyslexia: Analyzing Nonword Repetition Error Types

Stanley, Camille Christine 01 April 2019 (has links)
This study analyzes quantitative and qualitative differences in errors made during a nonword repetition task between children with dyslexia (n = 75) and their typically developing (TD) peers (n = 75). Participants were auditorily presented with 16 nonwords based on a CVC (consonant-vowel-consonant) pattern; nonwords varied from two to five syllables in length. Verbal responses were recorded, transcribed, and consonant phonemes were analyzed according to the following error types: substitutions, omissions, insertions, and transpositions. Analyses found that children with dyslexia perform more poorly on nonword repetition as compared to their TD peers. Specifically, during this nonword repetition task children with dyslexia differed from their TD peers in overall accuracy and omission errors. Groups did not differ in the quantity and quality of substitution, insertion, or transposition errors. Findings from this study may provide insight into mechanisms underlying phonological processing in children with dyslexia. Implications for future research and clinical work are also discussed.
2

The Relationship Between Phonological Working Memory, Phonological Sensitivity, and Incidental Word Learning

Angalliramachandra, Vijayachandra 21 August 2007 (has links)
No description available.
3

Reading aloud is not automatic: Processing capacity is required to generate a phonological code from print

Chan-Reynolds, Michael G. January 2005 (has links)
The process of generating a phonological code from print is widely described as automatic. This claim is tested in Chapter 1 by assessing whether phonological recoding uses central attention in the context of the Psychological Refractory Period (PRP) paradigm. Task 1 was a tone discrimination task and Task 2 was reading aloud. Nonword letter length and grapheme-phoneme complexity yielded additive effects with SOA in Experiments 1 and 2 suggesting that <em>assembled phonology</em> uses central attention. Neighborhood density (N) yielded additive effects with SOA in Experiments 3 and 4, suggesting that one form of lexical contribution to phonological recoding also uses central attention. Taken together, the results of these experiments are <em>inconsistent</em> with the widespread claim that phonological codes are computed automatically. Chapter 2 begins by reconsidering the utility of ?automaticity? as an explanatory framework. It is argued that automaticity should be replaced by accounts that make more specific claims about how processing unfolds. Experiment 5 yielded underadditivity of long-lag word repetition priming with decreasing SOA, suggesting that an early component of the lexical contribution to phonology does not use central attention. There was no evidence of Task 1 slowing with decreasing SOA in Experiments 6 and 7, suggesting that phonological recoding processes are postponed until central attention becomes available. Theoretical development in this field (and others) will be facilitated by abandoning the idea that skilled performance inevitably means that all the underlying processes are automatic.
4

Reading aloud is not automatic: Processing capacity is required to generate a phonological code from print

Chan-Reynolds, Michael G. January 2005 (has links)
The process of generating a phonological code from print is widely described as automatic. This claim is tested in Chapter 1 by assessing whether phonological recoding uses central attention in the context of the Psychological Refractory Period (PRP) paradigm. Task 1 was a tone discrimination task and Task 2 was reading aloud. Nonword letter length and grapheme-phoneme complexity yielded additive effects with SOA in Experiments 1 and 2 suggesting that <em>assembled phonology</em> uses central attention. Neighborhood density (N) yielded additive effects with SOA in Experiments 3 and 4, suggesting that one form of lexical contribution to phonological recoding also uses central attention. Taken together, the results of these experiments are <em>inconsistent</em> with the widespread claim that phonological codes are computed automatically. Chapter 2 begins by reconsidering the utility of ?automaticity? as an explanatory framework. It is argued that automaticity should be replaced by accounts that make more specific claims about how processing unfolds. Experiment 5 yielded underadditivity of long-lag word repetition priming with decreasing SOA, suggesting that an early component of the lexical contribution to phonology does not use central attention. There was no evidence of Task 1 slowing with decreasing SOA in Experiments 6 and 7, suggesting that phonological recoding processes are postponed until central attention becomes available. Theoretical development in this field (and others) will be facilitated by abandoning the idea that skilled performance inevitably means that all the underlying processes are automatic.
5

The Relationship Between Nonword Repetition Performance and Social Behaviors in 7- to 11-Year-Old Children with Language Impairment

Hillary, Bethany Lynne 23 December 2008 (has links) (PDF)
Recent literature has suggested a link between verbal working memory and language impairment (LI) in children. There is limited research, however, about the link between verbal working memory and social behaviors in children with LI. This study was designed to explore the relationship between social behaviors (measured by the Teacher Behavior Rating Scale; Hart & Robinson, 1996) and verbal working memory abilities (measured by a 3-, 4-, and 5-syllable nonword repetition task) in children with LI. Thirty-six children (18 with LI and 18 typically developing) aged 7 to 11 years participated in the study. Children with LI were rated by teachers as having significantly higher levels of reticence and lower levels of likeability and prosocial behaviors compared to typically developing peers. Children with LI also scored significantly lower on the nonword repetition task at the 3- and 4-syllable levels. Regression analyses revealed that nonword repetition scores were significant predictors of reticence and prosocial behaviors when examining all children as a group, accounting for 22% and 42% of the variance, respectively. As nonword repetition performance increased, reticence ratings decreased and prosocial behavior ratings increased. Nonword repetition did not significantly predict ratings on reticence or prosocial behaviors when examining language groups separately. Nonword repetition was not a significant predictor of likeability for children in this study. These findings indicate a relationship between nonword repetition performance and social behaviors in children with and without LI.
6

Prosodiska aspekter av nonordsproduktion hos barn med cochleaimplantat och barn med språkstörning / Prosodic aspects of nonword repetition in children with cochlear implants and children with language impairment

Adolfsson, Elin, Persson, Hanna January 2010 (has links)
<p>Prosodi kan sammanfattas som talets rytmiska, dynamiska och melodiska aspekter. Utan prosodi skulle talet förefalla monotont och kommunikationen kunna kompliceras. Syftet med föreliggande studie var att undersöka prosodiska aspekter av nonordsproduktion hos barn med cochleaimplantat och barn med språkstörning. Tidigare studier av prosodi hos nämnda grupper har inte i detalj beskrivit vilka typer av fel som förekommer varför detta var intressant att undersöka.</p><p>Föreliggande studie baseras på redan insamlat material av nonordsrepetition av sammanlagt 41 barn vilka deltagit i tidigare studier. Av dessa var 27 stycken barn med språkstörning i åldrarna 4:6-7:6 år och fjorton var barn med CI i åldrarna 3:0-13:4. Det inspelade materialet transkriberades och felanalyserades gruppvis och medelvärden för grupperna räknades ut.</p><p>Barnen med CI uppvisade större prosodiska problem vid nonordsrepetition än barnen med språkstörning. Såväl barnen med språkstörning som barnen med CI uppvisade svårigheter med stavelseproduktion, betoningsplacering, ordaccent och vokalkvantitet. Dock gjorde barnen med CI generellt större antal fel samt fler olika typer av fel jämfört med barnen med språkstörning. Alla barnen med CI gjorde någon typ av prosodiskt fel medan 11 av 27 de barnen med språkstörning producerade korrekt prosodi på samtliga nonord. Barn som hade en högre ålder vid implantation uppvisade större prosodiska svårigheter än barn som implanterats vid en lägre ålder</p> / <p>Prosody can be defined as the rythmic, dynamic and melodic aspects of speech. Without prosody, speech would sound monotonous and communication could be obstructed. The aim of the present study was to examine prosodic aspects of nonword repetition by children with cochlear implants and children with language impairment. Previous studies of prosody in these groups have not in detail described what kinds of errors that occur and therefore this is interesting to investigate.</p><p>The present study is based on previously collected data of nonword repetition among a total of 41 children, all participating in previous studies. Of these children, 27 were children with language impairment aged between 4:6-7:6 years. Fourteen were children with CI aged between 3:0-13:4. The recorded data was transcribed and analyzed group wise and the mean value of the groups were calculated.</p><p>Children with CI showed prosodic problems in nonword repetition to a greater extent than children with language impairment did. Both children with language impairment and children with CI had difficulties with number of syllables, stress, tonal word accent and quantity of vowel. However, the children with CI generally made errors to a greater extent as well as more types of errors, compared to the children with language impairment. All children with CI made some type of prosodic error whilst 11 out of 27 of the language impaired children produced all the words prosodically correct. Children who were implanted at an older age showed greater difficulties with prosody than children who were implanted at a younger age.</p>
7

Prosodiska aspekter av nonordsproduktion hos barn med cochleaimplantat och barn med språkstörning / Prosodic aspects of nonword repetition in children with cochlear implants and children with language impairment

Adolfsson, Elin, Persson, Hanna January 2010 (has links)
Prosodi kan sammanfattas som talets rytmiska, dynamiska och melodiska aspekter. Utan prosodi skulle talet förefalla monotont och kommunikationen kunna kompliceras. Syftet med föreliggande studie var att undersöka prosodiska aspekter av nonordsproduktion hos barn med cochleaimplantat och barn med språkstörning. Tidigare studier av prosodi hos nämnda grupper har inte i detalj beskrivit vilka typer av fel som förekommer varför detta var intressant att undersöka. Föreliggande studie baseras på redan insamlat material av nonordsrepetition av sammanlagt 41 barn vilka deltagit i tidigare studier. Av dessa var 27 stycken barn med språkstörning i åldrarna 4:6-7:6 år och fjorton var barn med CI i åldrarna 3:0-13:4. Det inspelade materialet transkriberades och felanalyserades gruppvis och medelvärden för grupperna räknades ut. Barnen med CI uppvisade större prosodiska problem vid nonordsrepetition än barnen med språkstörning. Såväl barnen med språkstörning som barnen med CI uppvisade svårigheter med stavelseproduktion, betoningsplacering, ordaccent och vokalkvantitet. Dock gjorde barnen med CI generellt större antal fel samt fler olika typer av fel jämfört med barnen med språkstörning. Alla barnen med CI gjorde någon typ av prosodiskt fel medan 11 av 27 de barnen med språkstörning producerade korrekt prosodi på samtliga nonord. Barn som hade en högre ålder vid implantation uppvisade större prosodiska svårigheter än barn som implanterats vid en lägre ålder / Prosody can be defined as the rythmic, dynamic and melodic aspects of speech. Without prosody, speech would sound monotonous and communication could be obstructed. The aim of the present study was to examine prosodic aspects of nonword repetition by children with cochlear implants and children with language impairment. Previous studies of prosody in these groups have not in detail described what kinds of errors that occur and therefore this is interesting to investigate. The present study is based on previously collected data of nonword repetition among a total of 41 children, all participating in previous studies. Of these children, 27 were children with language impairment aged between 4:6-7:6 years. Fourteen were children with CI aged between 3:0-13:4. The recorded data was transcribed and analyzed group wise and the mean value of the groups were calculated. Children with CI showed prosodic problems in nonword repetition to a greater extent than children with language impairment did. Both children with language impairment and children with CI had difficulties with number of syllables, stress, tonal word accent and quantity of vowel. However, the children with CI generally made errors to a greater extent as well as more types of errors, compared to the children with language impairment. All children with CI made some type of prosodic error whilst 11 out of 27 of the language impaired children produced all the words prosodically correct. Children who were implanted at an older age showed greater difficulties with prosody than children who were implanted at a younger age.
8

Nonword processing in bilingual five year olds: Do phonotactics count?

Betancourt, Kyna 01 January 2013 (has links)
Phonotactic processing is foundational to the word processing task in both monolingual and bilingual children (Li & Farkas, 2002; Pierrehumbert, 2001; Shook & Marian, 2013; Storkel & Morrisette, 2002). While the use of phonotactic information in word processing in monolingual children is relatively well documented, it is less well understood in bilingual children. The purpose of this study was to investigate how bilingual kindergartners process the phonotactic probabilities of their two languages. A set of nonwords was developed that manipulated the strength of phonotactic probability across both Spanish and English while also controlling the language environment of the experimental task (i.e., whether children were tested in Spanish or English). Hence, this study allowed for a unique investigation into how bilingual children process two languages and their associated phonotactic probabilities. Specifically, this study provided answers to: whether or not bilingual children benefitted from a high probability processing advantage, if the phoneme systems of two languages were stored as one unit or separate units, and if there was an effect of language environment (i.e., an assimilation effect, Burki-Cohen et al., 1989). By varying the phonotactic probabilities of nonwords and the language environment), the answers to several research questions were sought. First, language exclusive nonwords (nonwords that had phonotactic probabilities unique to English or Spanish) were used to investigate the presence of a high phonotactic probability processing advantage in bilingual children. Second, high/low nonwords (nonwords with a high phonotactic probability in one language and a low phonotactic probability in the other language) were compared with the language exclusive nonwords to determine if the phonotactic systems of a bilingual child's two languages are stored together such that they interact during word processing. Finally, ambiguous nonwords (those with equal phonotactic probability in both languages) were used to investigate the influence of language environment on phonotactic processing. The nonwords were created by manipulating phonotactic probabilities in each language, recorded by two bilingual speakers, standardized for fundamental frequency and synthesized to become phonetically and acoustically ambiguous. Wordlikeness judgments in each language were obtained from monolingual English and bilingual Spanish-English adults. These results determined that adults were processing the varying phonotactic probabilities of the nonwords as designed and the words were appropriate stimuli for use in a word sorting task with bilingual children. In an attempt to replicate aspects of a natural language environment, the current study first divided children into two bilingual testing groups: one where mostly English was spoken and another where mostly Spanish was spoken. Children watched cartoons illustrating the need for sorting nonwords into two languages before completing the word sorting tasks. The experiment was presented using MouseTracker (Freeman, 2011), which recorded the participant's response and mouse cursor movement (as a measure of decision complexity) as the child selected either Spanish or English. Mixed level modeling results indicated significant differences in language choice but not decision complexity across the nonword types. First, bilingual children sorted language exclusive nonwords by focusing on whether the word was more probable in English or Spanish than whether the nonword had high or low probability within a language. Hence, these participants did not appear to benefit from a high phonotactic processing advantage. When children were sorting the high/low nonwords, they tended to ignore the fact that the nonwords had phonotactic probability in both languages, and treated them as belonging to the language in which they had the highest phonotactic probability. This finding would suggest that bilingual children do not appear to store the phonotactic systems of two languages together. Finally, results showed no effect of language environment when children were sorting the ambiguous nonwords. Overall, it appears that bilingual children focus on the overall phonotactic probability of a nonword (i.e., whether it is more probable in Spanish or English) during processing, while ignoring any dual phonotactic probabilities from two languages. These results are incorporated within a proposed model of bilingual word processing and a brief discussion of how these findings can be expanded to explain bilingual word learning is provided.
9

Nyordsinlärning i relation till ordförråd, nonordsrepetition och prosodi hos en grupp barn i förskoleåldern med typisk språkutveckling

Birchwood, Aina, Eriksson Leidnert, Michaela January 2014 (has links)
Vid flertalet studier har det framkommit att ordförrådets storlek och förmågan till nonordsrepetition påvisar samband med nyordsinlärning. De prosodiska egenskapernas inverkan vid nyordsinlärning är emellertid inte lika studerad. Syftet med föreliggande studie var att undersöka hur barn mellan 4:5 och 6:0 år med typisk språkutveckling presterar på nyordsinlärning i relation till ordförråd och repetition av nonord samt att utforska vilken inverkan prosodiska egenskaper har på förmågan till nyordsinlärning. I studien deltog 15 barn vilkas resultat på nyorden, ordförrådstestningen och nonordsrepetitionen uträknades. Nyordsinlärningsuppgiften bestod av sex ord vilka sammankopplades med sex olika föremål. Nyorden matchades i par med avseende på en åtskiljande prosodisk egenskap mellan dem: antingen antal stavelser, betoning eller ordaccent. Inga signifikanta korrelationer mellan nyordsinlärning, ordförråd och nonordsrepetition kunde påvisas. Det framkom dock att korrelationen mellan ålder och nonordsrepetition var nära signifikans och indikerade att ökad ålder gav ett högre resultat på nonordsrepetitionen. Gällande de prosodiska egenskapernas relation till nyordsinlärning upptäcktes en signifikant skillnad i betoningsplacering, nyord med betoning på den finala stavelsen fick högst resultat. Barnen lärde sig också trestaviga ord i större utsträckning än tvåstaviga ord. Studien implicerar att betoning och ordlängd verkar ha viss betydelse för nyordsinlärning i kontrast till ordaccent, medan det inte kan påvisas några föreliggande korrelationer mellan nyordsinlärning, ordförråd och nonordsrepetition. / Several studies have shown that vocabulary size and nonword repetition ability correlate with novel word learning. The impact of prosodic features on novel word learning has, however, not been studied extensively. The purpose of this study was to examine how children aged 4:5–6:0 with typical language development perform on novel word learning, vocabulary and nonword repetition and to explore what impact prosodic features have on the ability to learn novel words. The study involved 15 children whose performance on the novel word learning task, vocabulary testing and nonword repetition was calculated. The novel word learning task consisted of six words which were connected to six different items. The novel words were matched in pairs differing by only one prosodic feature: either the number of syllables, stress or tonal word accent. No significant correlations between the novel word learning, vocabulary and nonword repetition were found. However, the correlation between age and nonword repetition reached near significance, which indicated that increased age gave a higher result on the nonword repetition. Regarding how the prosodic features related to the novel word learning, a significant difference between stress placements was detected. Novel words with stress on the final syllable were easier to learn. The children also achieved a higher result on the three syllable words than the two syllable words. The study implies that stress and word length seem to play a somewhat important role for novel word learning in contrast to tonal word accent, while it appears to be no relation between novel word learning, vocabulary and nonword repetition.
10

Processing predictors of severity of speech sound disorders

Pera, Natalie January 2013 (has links)
This study investigated whether or not variability in the severity of speech sound disorders is related to variability in phonological short-term memory and/or variability in the accuracy of phonological representations. The aim was to determine speech processing predictors of severity of speech sound disorders. A total of 33 children, aged three to six years of age, were assessed on measures of nonword repetition, accuracy of phonological representations, accuracy of speech production, and language. The tests administered included the Clinical Evaluation of Language Fundamentals Preschool – 2 Australian, the Diagnostic Evaluation of Articulation and Phonology, the Nonword Repetition Test (modified), and the Phonological Representation Judgement Task (modified). The relationships between the results of these tests were established using a correlation analysis. The relationship between accuracy of phonological representations and the percentage of consonants correct was found to be mediated by language. There was no significant relationship between nonword repetition and percentage consonants correct. These findings may have been the result of small sample size, age of the participants, or co-morbid language difficulties. These findings imply that variability in severity of speech sound disorders may be related to a variable not directly assessed in this study. This variable may be a constraint relating to the stored motor programs within children’s speech processing systems. Implications for future research are discussed.

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