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1.
This study examined the memory performance of children with reading disabilities (RD) using methodology representative of three theoretical perspectives on RD subtypes: the phonological deficit, dual route, and phonological-core variable-difference models. Analyses compared the serial memory, verbal learning, and abstract visual-spatial memory performance of 45 children with RD to that of chronological-age (CA)- and reading-level (RL)-matched controls, using subtype identification methods from each of the theoretical models to classify children with RD. Phonological deficit and dual route comparisons indicated that children with RD, regardless of subtype, performed more poorly than CA- and better than RL-matched participants on all memory tasks. Phonological-core variable-difference methodology yielded three RD subtypes, two of which exhibited distinctive memory deficits relative to both CA and RL control groups. The phonological-core variable-difference model accounted for more variance in memory performance than either of the other two models. 相似文献
2.
The double-deficit hypothesis (Wolf, 1997; Wolf & Bowers, 1999, this issue) contends that deficits in phonological awareness and deficits in visual naming speed represent two independent causal impediments to reading acquisition for children with developmental reading disabilities (RD). One hundred and sixty-six children with severe RD from 7 to 13 years of age were classified into three deficit subgroups according to a double-deficit framework. A total of 140 children with RD, 84% of the sample, were classified; 54% demonstrated a double deficit (DD), 22% a phonological deficit only (PHON), and 24% a visual-naming speed deficit only (VNS). Diagnostic test profiles highlighted the joint contributions of the two core deficits in depressing written language acquisition. The children in the DD group were more globally impaired than those in the other subgroups, and the VNS group children were the highest achieving and most selectively impaired readers. Following 35 hours of word identification training, sizable gains and significant generalization of training effects were achieved by all subgroups. A metacognitive phonics program resulted in greater generalized effects across the domain of real English words, and a phonological training program produced superior outcomes within the phonological processing domain. The greatest non-word reading gains were achieved by children with only phonological deficits. 相似文献
3.
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
4.
Phonological processing problems have been consideredcritical in explaining developmental readingdisability. Reading disabled children were comparedwith two matched reading-level normal control groupson indicators of phonological processing. The readingdisabled children had lower nonword readingperformance than the phonics taught controls. However, performance was equivalent to that of thecontrols without phonics teaching. Therefore anonword reading deficit was not in itself diagnosticof developmental reading disability. The readingdisabled children and the non-phonics control groupwho exhibited lower nonword reading did not differfrom the phonics taught control group in phonemeawareness, nor in magnitude of the word regularityeffect. Nevertheless, within all groups thosechildren with higher phonemic awareness skills showedlarger word regularity effects and better nonwordreading. Processes involving two sources of knowledgefor phonological recoding are discussed asexplanations of these and many previous results onphonological deficits and of the phonological effectsof phonics instruction. 相似文献
5.
Robert Davies Javier Rodríguez-Ferreiro Paz Suárez Fernando Cuetos 《Reading and writing》2013,26(5):721-738
In an opaque orthography like English, phonological coding errors are a prominent feature of dyslexia. In a transparent orthography like Spanish, reading difficulties are characterized by slower reading speed rather than reduced accuracy. In previous research, the reading speed deficit was revealed by asking children to read lists of words. However, speed in list reading sums the time required to prepare an utterance, reaction time (RT), with the time required to say it, response duration (RD). Thus, the dyslexic speed deficit in transparent orthographies could be driven by slow RTs, by slow RDs, or both. The distinction is especially important if developmental readers rely on phonological coding to achieve lexical access because the whole word would have to be encoded before it could be identified. However, while the factors that affect reading RT have been extensively investigated, no attention has been paid to RD. We studied the performance of typically developing and dyslexic Spanish children in an oral reading task. We analysed the impact of word frequency and length on reading accuracy, RT, and RD. We found that accuracy, RT, and RD were affected by word frequency and length for both control and dyslexic readers. We also observed interactions between effects of reader group—dyslexic, typically developing (TD) younger or TD older readers—and effects of lexicality, frequency, and word length. Our results show that children are capable of reading aloud using lexical and sub-lexical coding processes in a transparent orthography. 相似文献
6.
Penny Chiappe Ron Stringer Linda S. Siegel Keith E. Stanovich 《Reading and writing》2002,15(1-2):73-107
It has been proposed that the phonological coredeficit that is linked to reading failure hasas its underlying cause a deficit in temporalprocessing. In a multivariate investigationdesigned to examine the temporal processingdeficit hypothesis, thirty reading-disabled(RD) adults, thirty-two normally achievingadults and thirty-one normally achievingchildren (reading-level controls) wereadministered a comprehensive battery thatincluded a wide range of timing tasks, inaddition to reading and phonological measures. Although adults with RD displayed overallperformance that was below that of normallyachieving adults on most of the timing tasks,their performance was not differentiallyinfluenced by rate of stimulus presentation. Although the RD adults displayed the typicalpattern of impaired phonological awareness andpseudoword reading relative to reading-levelmatched children, the reading-disabled adultsoutperformed the children on the timing tasks. Finally, with the exception of continuousnaming, the timing tasks shared little variancewith phonological sensitivity and contributedlittle unique variance to word reading. Although these findings undermine the timingdeficit hypothesis, they do provide evidencefor the involvement of naming deficits inreading disability. 相似文献
7.
First-grade children completed a battery of tasks that included standardized measures of word recognition and spelling, measures of phonological and orthographic processing skill, and a short indicator of exposure to print via home literacy experiences. Phonological and orthographic processing skill were separable components of variance in word recognition. Orthographic processing ability accounted for variance in word recognition ability even after the variance in three phonological processing measures had been partialed. Additionally, variance in orthographic processing ability not explained by phonological abilities was reliably linked to differences in print exposure. The print exposure measure was not, however, linked to the measures of phonological processing. This finding was unexpected but it is consistent with some previous research. The theoretical implications of this result are discussed. 相似文献
8.
To examine whether there are common or specific deficits of reading disability (RD) in first (L1) and second languages (L2), Chinese children (9–11 years, N = 76) with or without RD who learn English as an L2 were studied during a visual word rhyming judgment task. Evidence was found for common deficits in L1 and L2 in visuo-orthographic processes in left inferior temporal gyrus and left precuneus, as well as in phonological processes in left dorsal inferior frontal gyrus as children with RD showed less activation than controls in both languages. Furthermore, the visuo-orthographic deficit appears to be a RD effect, whereas the phonological deficit appears to be a reading/performance effect. Some weak evidence for language specific effects was also found. 相似文献
9.
There is evidence that phonological awareness skills secure decoding ability and that phonological deficits underlie failure to acquire adequate word recognition. Slow word‐reading rate may be an additional defining characteristic of reading disability. The present study aimed to investigate whether: (1) reading disabled (RD) Greek‐speaking children showed reading accuracy and reading speed deficits relative to chronological age‐matched controls (CAC) and reading age‐matched controls (RAC); (2) they showed phonological deficits relative to the two control groups who do not present reading difficulties; and (3) they showed reading comprehension deficits over and above any word reading deficits.
Results suggested that the reading accuracy of the RD group was predictably weaker than that of the CAC group but equivalent to that of the RAC group. However, the reading speed of the RD group was significantly slower than the RAC group, who showed the same single word reading speed as the CAC group.
Slow and laboured decoding was found to compromise the reading comprehension of the RD group, whose listening comprehension performance was as good as the two other groups. The RD children performed poorly on phonological awareness tasks and naming speed. Naming speed was not an independent core feature of reading difficulties in the Greek language but was associated with a general phonological deficit.
It is recommended that diagnostic assessments for children with reading difficulties in Greek should include phonological awareness, single word reading and pseudoword reading tasks that measure both accuracy and speed. 相似文献
10.
In this study, a reading-level-match design was used to test the hypothesis that children with reading disability (RD) are characterized by poor phonological skills, and that a developmental lag, as opposed to a specific deficit, will be found in transparent orthographies. Spanish has a transparent orthography and thus children with RD should not show severe difficulties in the use of the phonological route, as in the English language. A sample of 118 participants was selected and organized into three different groups: 40 with RD, 38 normal readers matched in age with the former, and 40 younger normal readers at the same reading level as those with RD. Two experiments were conducted to investigate the effects of lexicality, word frequency, word length, and positional frequency of syllables on lexical decision making and word-naming performance. While the participants were performing the naming task, we recorded what they read to subsequently analyze the form as well as the frequency of naming errors. The present study provides evidence for a deficit in phonological processing in a transparent orthography, particularly in nonword reading, because there were differences between the reading-level-matched groups. 相似文献
11.
Tami Katzir YoungSuk Kim Maryanne Wolf Becky Kennedy Maureen Lovett Robin Morris 《Reading and writing》2006,19(8):845-872
The role of spelling recognition was examined in word reading skills and reading comprehension for dyslexic and nondyslexic children. Dyslexic and nondyslexic children were matched on their raw word reading proficiency. Relationships between spelling recognition and the following were examined for both groups of children: verbal ability, working memory, phonological measures, rapid naming, word reading, and reading comprehension. Children’s performance in spelling recognition was significantly associated with their skills in word reading and reading comprehension regardless of their reading disability status. Furthermore, spelling recognition contributed significant variance to reading comprehension for both dyslexic and nondyslexic children after the effects of phonological awareness, rapid naming, and word reading proficiency had been accounted for. The results support the role of spelling recognition in reading development for both groups of children and they are discussed using a componential reading fluency framework. 相似文献
12.
The current meta-analysis synthesized findings from profiling research on Chinese children with reading difficulties (RD). We reviewed a total of 81 studies published between 1964 and May 2015, representing a total of 9735 Chinese children. There are 982 effect sizes for the comparison between children with RD and age-matched typically developing (A-TD) children and 152 effect sizes for the comparison between children with RD and reading-level-matched typically developing (R-TD) children on multiple linguistic and cognitive skills. Results showed that compared to A-TD children, children with RD have severe deficits in morphological awareness, orthographic knowledge, phonological awareness, rapid naming, working memory, and visual skills and moderate deficits in short-term memory and motor skills. Compared to R-TD children, children with RD only have moderate deficits in rapid naming and mild deficits in orthographic knowledge. Moderation analyses for the comparison between RD and A-TD children revealed that children with more severe RD show more severe deficits in morphological awareness, phonological awareness, rapid naming, and visual skills. However, neither location (Mainland vs. Hong Kong) nor type of reading screening (character recognition vs. character recognition combined with reading comprehension) emerged as a moderator of the deficit profiles. These findings indicate that Chinese children with RD have deficits on a wide range of cognitive and linguistic skills. Deficits in rapid naming and orthographic knowledge may be potential causal factors for RD in Chinese based on existing evidence. Implications for the diagnosis and instructions of Chinese children with RD were discussed. 相似文献
13.
《Australian Journal of Learning Difficulties》2013,18(2):193-211
The purpose of this small-scale exploratory study was to examine the effects of using a game-based instructional approach to teach word recognition and spelling to Grade 6 students with reading disabilities (RD) and attention deficit disorders. Treatment and comparison groups were formed. The students were placed in either a traditional spelling group or an alternate game group. Different measures of phonological awareness, phonological memory and rapid naming as well as the word recognition and spelling subtests were administered to six students with RD and attention deficits. The study results indicate that students in the game-based approach outperformed students in the traditional, text-based spelling programs. In addition, the remediation of specific deficit subskills was possible through a game-based approach. Rapid naming, word recognition and spelling subtest results all improved through this method, with rapid naming improving the most. The study provides evidence for marked improvement in engaging behavior as well as literacy skills through alternate instructional methodologies. 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.
Xiujie Yang 《教育心理学》2020,40(7):893-911
AbstractThe present study examined phonological processing skills (phonological memory, phonological awareness, and rapid automatised naming, RAN) in relation to early Chinese reading and early Chinese mathematics for young children. Early Chinese reading was assessed with single character reading and multi-character word reading, and early mathematics was assessed with procedural arithmetic and arithmetic story problems. Among 86 Chinese kindergarteners, phonological processing skills explained 20% of the variance in character reading and 28% of the variance in word reading; they accounted for 8% of the variance in arithmetic and 11% of the variance in story problem performance. Specifically, findings further highlight the general importance of phonological awareness in early Chinese single character reading, word reading, simple arithmetic and story problems, and the specific role of RAN in single character reading and simple arithmetic.
- Highlights
Phonological awareness and rapid automatised naming explained unique variance in Chinese single character reading and procedural arithmetic.
Only phonological awareness significantly accounted for unique variance in Chinese word reading and arithmetic story problems.
The associations of phonological awareness with procedural arithmetic and arithmetic story problem were maintained even beyond other variables.
16.
Contributions of phonological processing skills to reading skills in Arabic speaking children 总被引：1，自引：0，他引：1
This cross-sectional study investigated contributions of phonological awareness (Elision and blending), rapid naming (object,
color, letter, and digit), and phonological memory (nonword repetition and Digit Span) to basic decoding and fluency skills
in Arabic. Participants were 237 Arabic speaking children from Grades K-3. Dependent measures included word decoding, oral
passage reading fluency, nonword reading fluency, and retell fluency. Within-grade analyses indicated that phonological awareness
accounted for more variance than rapid naming regardless of the nature of the outcome measure and grade. Rapid naming’s capacity
to predict variance, while less than that of phonological awareness, tended to rise steadily and was highest in Grade 3. Phonological
memory, as measured by this study’s tasks, showed almost no relationship to reading performance. The findings are discussed
with respect to changing the requirements of Arabic reading in Grades K-3 and suggestions are made for future research. 相似文献
17.
Bruce F. Pennington Dianne L. Lefly Guy C. Van Orden Myra O. Bookman Shelley D. Smith 《Annals of dyslexia》1987,37(1):62-89
A pervasive assumption in most accounts of normal reading and spelling development is that phonological coding is important
early in development but is subsequently superseded by faster, orthographic coding which bypasses phonology. We call this
assumption, which derives from dual process theory, the developmental bypass hypothesis. The present study tests four specific
predictions of the developmental bypass hypothesis by comparing dyslexics and nondyslexics from the same families in a cross-sectional
design. The four predictions are: 1) That phonological coding skill develops early in normal readers and soon reaches asymptote,
whereas orthographic coding skill has a protracted course of development; 2) that the correlation of adult reading or spelling
performance with phonological coding skill is considerably less than the correlation with orthographic coding skill; 3) that
dyslexics who are mainly deficient in phonological coding skill should be able to bypass this deficit and eventually close
the gap in reading and spelling performance; and 4) that the greatest differences between dyslexics and developmental controls
on measures of phonological coding skill should be observed early rather than late in development.
None of the four predictions of the developmental bypass hypothesis were upheld. Phonological coding skill continued to develop
in nondyslexics until adulthood. It accounted for a substantial (32–53 percent) portion of the variance in reading and spelling
performance in adult nondyslexics, whereas orthographic coding skill did not account for a statistically reliable portion
of this variance. The dyslexics differed little across age in phonological coding skill, but made linear progress in orthographic
coding skill, surpassing spelling-age (SA) controls by adulthood. Nonetheless, they didnot close the gap in reading and spelling performance. Finally, dyslexics were significantly worse than SA (and Reading Age [RA])
controls in phonological coding skill only in adulthood.
This research was supported by the following grants to the first author: A NIMH RSDA (MH00419-05) and project grants from
NIMH (MH38820-04), NICHD (HD19423-02) and the March of Dimes (12-135). Author Smith’s work was supported by a project grant
from NICHD (HD 19423-02). 相似文献
18.
Nathlie A. Badian 《Annals of dyslexia》2001,51(1):177-202
Ninety-six children were administered an orthographic test as preschoolers and two measures of nonphonemic phonological awareness
(syllable segmentation, rhyme detection) in midkindergarten. The power of the three measures to predict reading at grades
1, 3, and 7 was examined. With earlier reading level, preschool verbal IQ and age, and verbal memory controlled, both phonological
measures added significant variance to grade 1 word reading, and syllable segmentation also contributed to reading comprehension,
but neither measure accounted for variance in reading at grades 3 and 7. The orthographic measure contributed significant
variance to grade 1 word reading, and also to reading vocabulary and reading comprehension at grades 3 and 7, with the proportion
of variance in reading comprehension increasing with grade level. When early (grade 1) and late (grade 7) poor readers were
compared, late poor readers were significantly higher than early poor readers on a first grade phonological test, but significantly
lower on a seventh grade orthographic measure. Evidence suggested that a late reading comprehension deficit may be due to
poor orthographic processing skills in some children, but to a phonological and general verbal deficit in others. 相似文献
19.
Sascha Schroeder 《Journal of Research in Reading》2013,36(2):186-201
Many low‐skill readers have problems with visual word recognition. In particular, low‐skill readers show a substantial nonword reading deficit that is attributed to deficits in sub‐lexical processing. In this study, I examined whether the nonword deficits of German 14‐year‐old low‐skill readers were associated with inefficient use of multi‐letter information. In a lexical‐decision experiment, words and nonwords were presented in standard format and in MiXeD cAsE format which has been shown to be especially disrupting for sub‐lexical processing. When the stimuli were presented in standard format, low‐skill readers showed a substantial nonword reading deficit, that is they were generally slower than high‐skill readers, but had special problems with decoding nonwords. However, when stimuli were presented in MiXeD cAsE, low‐ and high‐skill readers showed equal impairments in nonword processing. This finding indicates that low‐skill readers do not use context‐sensitive multi‐letter rules during phonological assembly in normal reading. 相似文献
20.
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