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1.
Escribano CL 《Journal of learning disabilities》2007,40(4):319-330
The double-deficit hypothesis acknowledges both phonological processing deficits and serial naming speed deficits as two dimensions associated with reading disabilities. The purpose of this study was to examine these two dimensions of reading as they were related to the reading skills of 29 Spanish average readers and poor readers (mean age 9 years 7 months) who met the criteria for either single phonological deficit (PD), double deficit (DD), or no deficit. DD children were the slowest readers and had the weakest orthography processing skills. No significant differences were found between PD and DD groups on word and pseudoword reading. Word reading and reading comprehension skills were average or above average in the three studied groups. As in previous studies in transparent orthographies, word reading was not a salient problem for Spanish poor readers, whereas for the DD group, reading speed and orthographic recognition skills were significantly affected. 相似文献
2.
Children who are poor readers have difficulty naming pictured objects. Their naming difficulty could be a result of inadequate representations of the phonology of words, inadequate processing of those representations, or both. In this study, third-grade good and poor readers were tested on object naming, and, in cases of naming failure, forced-choice recognition tasks were used to probe their knowledge of the phonology of the object names. The two reading groups showed no differences in their ability to select the initial phonemes or rhymes of object names they had not produced spontaneously. Moreover, initial phoneme prompts were helpful for both reading groups. The children differed, however, in their ability to produce words after being given rhyme information. The results indicated that, except in the ability to manipulate explicitly phonological information, the poor readers; performance was qualitatively similar to that of the good readers. It is suggested that training in phonological analysis may help poor readers overcome the deficiencies in establishing and processing phonological representations that lead to their quantitative deficit in object naming. 相似文献
3.
The role of speed of processing, rapid naming, and phonological awareness in reading achievement 总被引：5，自引：0，他引：5
Catts HW Gillispie M Leonard LB Kail RV Miller CA 《Journal of learning disabilities》2002,35(6):509-524
This study investigated the role of speed of processing, rapid naming, and phonological awareness in reading achievement. Measures of response time in motor, visual, lexical, grammatical, and phonological tasks were administered to 279 children in third grade. Measures of rapid object naming, phonological awareness, and reading achievement were given in second and fourth grades. Reading group comparisons indicated that poor readers were proportionally slower than good readers across response time measures and on the rapid object naming task. These results suggest that some poor readers have a general deficit in speed of processing and that their problems in rapid object naming are in part a reflection of this deficit. Hierarchical regression analyses further showed that when considered along with IQ and phonological awareness, speed of processing explained unique variance in reading achievement. This finding suggests that a speed of processing deficit may be an "extraphonological" factor in some reading disabilities. 相似文献
4.
The alphasyllabary of Kannada comprises more than 400 symbols called akshara; each symbol is visuo-spatially complex with a consistent representation at the dual levels of the syllable and the phoneme.
We investigated reading difficulties in Kannada among 8–12 year old children by conducting a between-groups followed by a
case series analysis. We compared the children with reading difficulties with same age competent readers and younger readers
who were similar in language level, matched on measures of vocabulary, syntactic processing, and morphological processing.
Reading difficulties were characterized by poor akshara knowledge. Concomitant impairments were in syllable and phoneme level
phonological skills, in rapid naming and in oral language skills. The case series analysis highlighted the variability of
profiles among poor readers with the most common impairments being in akshara knowledge and phonological processing. Sub-groups
of poor readers showed additional deficits in oral language, rapid naming, and visual processing skills. Together our findings
indicate that the core deficit associated with reading difficulty in the alphasyllabary of Kannada is in the phonological
domain. However, accompanying deficits in related skills, including visual processing, can further inhibit reading attainment.
The findings from this study support a multifactorial model of reading development. 相似文献
5.
Dyslexic children (n=21, mean age=10.2 years) were compared with normal readers of the same age, normal readers of the same reading-age, and poor readers of the same reading-age on measures of phonological decoding and automatic word processing. Three different tasks, varying in phonological demand, were used: a naming task, an auditory-visual matching task, and a lexical decision task. On each task, word-pseudoword profiles were obtained to test phonological decoding skills and unspeeded-speeded profiles were assessed to test automaticity in word processing. Main results indicated that dyslexics have a deficit in automatic phonological decoding skills. The results are discussed within the framework of the phonological deficit and the automatization deficit hypothesis. 相似文献
6.
This study examined phonological awareness at the level of phonemes and rhyme and related this to nonword naming ability. Poor readers were compared with 11 year old chronological-age controls and 8 year old reading-age controls. The poor reader group was impaired for chronological age in all tasks, and impaired for reading age at nonword naming and phoneme deletion. The poor readers' rhyming skills, however, were commensurate with reading age. Individual variation was observed together with exceptions to the group findings; most poor readers performed within the range of the reading-age controls on the phonological tasks and in nonword naming. Dissociations in phonological skills were evident, including indications that intact awareness of rhyme may not be a prerequisite for the development of phoneme awareness. Furthermore, phoneme awareness correlated significantly with poor readers' word and nonword reading ability, whereas rhyming skill did not. Therefore, phoneme awareness may be more important than rhyming skill in understanding reading disorders. 相似文献
7.
Although weaknesses in metaphonological skills are well-documented in poor readers, prior studies have yielded inconsistent
findings as to whether less-skilled readers also have deficits in the more primary phonological processes entailed in verbal
working memory and speech production tasks. The present study was designed to examine this issue by comparing less-skilled
third-graders readers (n=30) with younger children at the same reading level (n=30) and with more-skilled agemates (n=30)
on a variety of tasks that require phonological processing (i.e., three “verbal memory” tasks [word span, span with concurrent
processing, pseudoword imitation] and three “speech production” tasks [word-pair repetition, tongue twisters, rapid naming]).
The results were striking: the less-skilled third-grade readers had significantly lower accuracy scores than both their agemates
and the younger normal readers on the word span, pseudoword imitation, word-pair repetition, and tongue twister tasks. Measures
of accuracy were more related to reading ability than were measures of speed. Performance on a pseudoword imitation task was
the variable most strongly linked to reading achievement. 相似文献
8.
Nathlie A. Badian 《Reading and writing》1993,5(1):87-100
This study examined differences between adequate and poor readers in phonemic awareness, rapid continuous and confrontation naming, and visual symbol processing. It also investigated which of these skills make independent contributions to word recognition, pseudoword reading, and reading comprehension. Subjects were 170 school referrals of average intelligence, aged 6 to 10 years. The strongest differentiators of adequate and poor readers, with IQ and reading experience controlled, were phonemic awareness, naming speed for letters and pictured objects, and visual symbol processing. Letter naming speed made the largest independent contribution to word recognition, phonemic awareness to pseudoword reading, and object naming speed to reading comprehension. Confrontation picture naming accounted for minimal variance in reading skills, when IQ was controlled. It was concluded that tasks of naming speed, phonemic awareness, and visual symbol processing are valuable components of a diagnostic battery when testing children with possible reading disability. 相似文献
9.
Nathlie A. Badian 《Annals of dyslexia》1994,44(1):1-25
Because of the research demonstrating the roles of phonological awareness, serial naming speed, and orthographic processing
in reading, a test of each of these skills was added to a preschool screening battery. The main aim of the study was to determine
whether these measures would contribute to the prediction of reading. The 118 subjects were first tested six months before
kindergarten entry and were followed up 19 and 24 months later. Each additional screening test made a significant, independent
contribution to the prediction of early first grade word reading/spelling, after the contributions of a parent rating of preschool
reading ability (PRA), verbal IQ, socio-economic status (SES), and chronological age were accounted for. With letter naming
and PRA, the additional tests were responsible for 62 percent of the variance. The orthographic test made the largest single
contribution (32%) to the variance in word reading/spelling.
Variables contributing significantly to the prediction of later first grade reading comprehension were (in order of proportion
of the variance accounted for) letter naming, sentence memory, object naming speed, the orthographic test, and SES. The revised
preschool screening battery correctly identified 91 percent of individual first grade good and poor readers. It was concluded
that preschool measures of phonological awareness, serial naming speed, and orthographic processing make a strong contribution
to prediction of first grade reading. 相似文献
10.
Judith A. Bowey Michaela McGuigan Annette Ruschena 《Journal of Research in Reading》2005,28(4):400-422
The current study examined several alternative explanations of the association between serial naming speed within fourth‐grade children by determining the extent to which the association between word reading and naming speed for letters and numbers is mediated by global processing speed, alphanumeric symbol processing efficiency and phonological processing ability. Children were given multiple measures of key constructs, i.e. word‐level reading, serial naming of both alphanumeric and non‐alphanumeric items, phonological processing ability, articulation rate and global processing speed. The robust association between alphanumeric naming speed and reading within fourth‐grade children was largely mediated by phonological processing ability. Markedly different patterns of results were observed for naming speed for letters and digits and naming speed for colours and pictures in children of this age. Relative to the latter, alphanumeric naming speed better assesses an underlying phonological processing ability that is common to word‐reading ability. We argue that item identification processes contribute little to individual differences in alphanumeric naming speed within relatively proficient readers and that the extent to which alphanumeric naming speed primarily reflects phonological processing is likely to vary with the level of overlearning of letters and numbers and their names. 相似文献
11.
The purpose of this study was to determine the components of working memory (WM) that underlie less skilled readers' comprehension and word recognition difficulties. Performance of 3 less skilled reading subgroups---children with reading disabilities (RD) in both word recognition and comprehension; children with comprehension deficits only; and children with low verbal IQ, word recognition, and comprehension (poor readers)--was compared to that of skilled readers on WM, short-term memory (STM), processing speed, executive, and phonological processing measures. Ability group comparisons showed that (a) skilled readers outperformed all less skilled readers on measures of WM, updating, and processing speed; (b) children with comprehension deficits only outperformed children with RD on measures of WM, STM, phonological processing, and processing speed; and (c) children with RD outperformed poor readers on WM and phonological processing measures. A hierarchical regression analysis showed that (a) subgroup differences on WM tasks among less skilled readers were moderated by a storage system not specific to phonological skills, and (b) STM and updating contributed significant variance to WM beyond what was contributed by reading group classification. The latter finding suggested that some differences in storage and executive processing emerged between skilled and less skilled readers that were not specific to reading. 相似文献
12.
The present study was designed to examine the question of whether developmental dyslexia in 12-year-old students at the beginning
of secondary education in the Netherlands is confined to problems in the domain of reading and spelling or also is related
to difficulties in other areas. In particular, hypotheses derived from theories on phonological processing, rapid automatized
naming, working memory, and automatization of skills were tested. To overcome the definition and selection problems of many
previous studies, we included in our study all students in the first year of secondary special education in a Dutch school
district. Participants were classified as either dyslexic, garden-variety, or hyperlexic poor readers, according to the degree
of discrepancy between their word recognition and listening comprehension scores. In addition, groups of normal readers were
formed, matching the poor readers in either reading age or chronological age. A large test battery was administered to each
student, including phonological, naming, working memory, speed of processing, and motor tests. The findings indicate that
dyslexia is associated with deficits in (1) phonological recoding, word recognition (both in their native Dutch and in English
as a second language), and spelling skills; and (2) naming speed for letters and digits. Dyslexia was not associated with
deficits in other areas. The results suggest that developmental dyslexia, at the age of 12, might be (or might have become)
a difficulty rather isolated from deficiencies in other cognitive and motor skills. 相似文献
13.
Patricia G. Bowers 《Reading and writing》1995,7(2):189-216
The contributions of naming speed measured on both serial-list and various discrete-trial formats to several reading subskills were examined longitudinally to determine their impact independent of other reading-related skills on reading disabilities. Tests of symbol naming speed, phonological awareness, vocabulary, memory span and coding speed were given to 38 poor and average readers when they were in Grades 2, 3 and 4. Grade 4 poor readers were discriminated from moderately poor or good readers on serial-list and discrete-trial naming speed tests in all grades. In addition, phonological awareness and vocabulary, but not memory span or coding speed, discriminated groups. These variables in Grade 2 contributed unique variance to reading scores in Grade 4 in differing patterns. Hypotheses about the nature of the reading — naming speed relationship are discussed. 相似文献
14.
This study explores the contribution of cognitive processes to comprehension skills in adults who suffered from childhood developmental dyslexia (CD). The performance of adults with CD (ages 17 to 23), chronological age-matched (CA) adults, and reading level-matched (RL) children was compared on measures of phonological processing, naming speed, working memory (WM), general knowledge, vocabulary, and comprehension. The results showed that adults with CD scored lower on measures of phonological processing, naming speed, WM, general knowledge, and vocabulary when compared to CA readers but were comparable to RL children on the majority of process measures. Phonological processing, naming speed, vocabulary, general knowledge, and listening comprehension contributed independent variance to reading comprehension accuracy, whereas WM, intelligence, phonological processing, and listening comprehension contributed independent variance to comprehension fluency. Adults with CD scored lower than CA adults and higher than RL children on measures of lexical processing, WM, and listening comprehension when word recognition and intelligence were partialed from the analysis. In summary, constraints in phonological processing and naming speed mediate only some of the influence of high-order processes on reading comprehension. Furthermore, adults with CD experience difficulties in WM, listening comprehension, and vocabulary independently of their word recognition problems and intellectual ability. 相似文献
15.
Word reading skills and reading‐related language and cognitive correlates were examined in Swedish 10–15‐year‐olds with autism spectrum disorders (ASD). The full group with ASD did not differ statistically from an age‐matched comparison group in word reading, but a poor‐readers subgroup was identified who displayed severe difficulties. Normal readers with ASD did not differ from the comparison group in nonverbal ability, phonological processing, rapid naming or receptive vocabulary. The poor subgroup performed, however, below on all measures except nonverbal ability. When poor readers with ASD were matched for reading level with younger controls, no difference was found on any reading‐related skill. No significant correlation was furthermore found between autistic symptomatology and word reading within the ASD group. It is concluded that the pattern of individual differences in word reading among children with ASD conforms well to that seen in children without ASD of normal or delayed reading abilities. 相似文献
16.
Whereas many studies point to a positive relationship between phonological skills and reading in English, little is known about these relationships for children learning to read in a morphemic orthography such as Chinese. The aim of this study was to examine the relationships among reading ability, phonological, semantic and syntactic skills in Chinese. The participants were 196 grade 1 to grade 4 Chinese children in Hong Kong. A word recognition task in Chinese was developed and children who scored in the lowest quartile were classified as poor readers. The children were administered phonological tasks (tone and rhyming discrimination), semantic tasks (choosing similar words and sentences meanings), a syntactic task (oral cloze), and a working memory task. The results showed that word recognition was highly correlated with phonological skills and semantic processing, and was only moderately related to syntactic knowledge and working memory. Poor readers showed a significant lag in the development of these skills with the most significant problems at the phonological and semantic levels. Phonological skills are important to the acquisition of reading skills in both Chinese and English. 相似文献
17.
《Scientific Studies of Reading》2013,17(4):401-429
The double-deficit hypothesis suggests that deficient skills on two dimensions, rapid naming and phonemic awareness, are associated with poor reading. We studied the reading, spelling, and orthographic skills of Grade 3 children who met our criteria for double asset (DA), single phonological deficit (PD), single naming speed deficit (NSD), and double deficit (DD) groups. Analyses of variance revealed main effects of each factor, oftentimes modified by significant interactions, on the varied achievement measures. All deficit groups performed below the DA children. Compared to children with NSD, children with PD (a) were less accurate decoders, (b) were faster readers, (c) had weaker spelling dictation, and (d) had comparably poor spelling recognition scores. Children with DD showed a mixed pattern of stronger, equal, or weaker skills compared to younger reading level controls. 相似文献
18.
The main hypotheses addressed in the research were (1) whether imprecision in the phonological representations of lexical
items underlies the impaired expressive naming abilities of disabled readers, and (2) whether weak verbal memory might mediate
the relationship between naming and reading skills. From samples of 93 first graders and 67 fourth graders, extreme groups
of good and poor readers were identified and compared on measures of receptive vocabulary, expressive naming, acceptability
judgments for variants of object names, imitation and correction of naming errors by another speaker, pseudoword repetition,
and long-term memory. Performance was generally better by older than younger students and by good than poor readers at each
age, with little interaction between grade and reader group. The results indicated that for both good and poor readers, imprecise
phonological knowledge, especially about long words, contributed to children’s difficulties on all naming tasks. Memory differences,
however, appeared to play only a minor role in explaining the strong association between naming and reading. 相似文献
19.
The purpose of this study was to determine whether poor readers have more pronounced problems than average-reading peers reading
derived words the base forms of which undergo a phonological shift when a suffix is added (i.e., shift relations as in “natural”),
as compared to derived words whose forms are phonologically and orthographically transparent (i.e., stable relations, as in
“cultural”). Two computer-based word recognition tasks (Naming and Lexical Decision) were administered to children with reading
disability (RD), peers with average reading ability, and adults. Across tasks, there was an effect for transparency (i.e.,
better performance on stable than shift words) for both child groups and the adults. For the children, a significant interaction
was found between group and word type. Specifically, on the naming task, there was an advantage for the stable words, and
this was most noteworthy for the children with RD. On the lexical decision task, trade-offs of speed and accuracy were evident
for the child reader groups. Performances on the nonwords showed the poor readers to be comparable to the average readers
in distinguishing legal and illegal nonwords; further analyses suggested that poor readers carried out deeper processing of
derived words than their average reading peers. Additional study is needed to explore the relation of orthographic and phonological
processing on poor readers’ memory for and processing of derived words. 相似文献
20.
The present study examined factors that influence the process of learning to read in a second language. The Hebrew reading
comprehension skills of 68 Russian-speaking children (mean age 7 years 6 months) were screened at the start of Grade 2. From
this sample, 40 participants were selected: 20 successful learners and 20 unsuccessful learners. These two groups were then
tested on a wide range of language skills (e.g., phonological processing, vocabulary, syntactic and morphological awareness)
in both languages (Hebrew and Russian) and reading skills in Hebrew (e.g., reading speed and accuracy).
Two factors, level of spoken Hebrew and phonological awareness deficits in both languages, were significant. Phonological
awareness difficulties constituted the key factor associated with poor decoding whereas insufficient mastery of spoken Hebrew
was important in the case of reading comprehension. An interesting dissociation was also found in our poor readers between
impaired phonological awareness and other unimpaired phonological processing abilities such as oral pseudoword repetition
and working memory. These findings suggest that, in addition to poor spoken L2 proficiency, poor readers are characterized
more by a metalinguistic rather than a linguistic deficit in their native tongue. 相似文献