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1.
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
2.
P. G. Aaron 《Reading and writing》1989,1(4):291-308
This study tested the hypothesis that when a stringent criterion of normal IQ is applied in the selection of dyslexic readers, and when dyslexics, nondyslexic poor readers, and normal readers are matched on reading comprehension — rather than word reading — significant differences among these groups can be demonstrated. Two groups of poor readers from primary grades, one with normal IQ (dyslexics) and the other with below-average IQ (nonspecific reading disabled, NSRD) were matched for reading comprehension with a group of younger normal readers. The dyslexic group was found to be inferior to the other two groups in tests of decoding and spelling. The dyslexic readers were more context-dependent for word recognition than the other two groups. The NSRD group did not differ from the normal readers in these aspects but had the worst performance on a test of inferential comprehension. It was concluded that dyslexics differ from normal readers and low-IQ poor readers in word and nonword reading skills and context-dependency for reading. A group of six adult dyslexics were also found to be deficient in decoding skills. A lack of unanimity in the use of certain terminology, a substantial age difference between low-IQ poor readers and normals, and the difference in the criteria used for matching the different groups could be factors that can explain the disagreements seen between the findings of the present study and those reported by some other studies. Potential problems associated with reading-age matched experimental design are discussed. 相似文献
3.
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
4.
The present study examines whether reading fluency benefits more from repeated reading of a limited set of words or from practicing
reading with many different words. A group of 37 reading delayed Dutch children repeatedly read the same 20 words with limited
exposure duration, whereas another group of 37 poor readers received the same reading exercises with 400 different words.
Results demonstrated that improvements in accuracy and speed of trained words were larger for the repeated reading group than
for the children who had only practiced with these words once. No difference in generalisation of effects to untrained neighbour
and control words was found between the two conditions. Furthermore, rapid naming skill was unrelated to improvements in reading
fluency and transfer effects in both training conditions. Results demonstrate that the practical value of repeated reading
lies in its word specific training effects. 相似文献
5.
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
6.
The effects of an instructional programme for deriving word meanings from the context and through morphological analysis for grade 4 primary‐school pupils with poor versus average reading comprehension were examined. The programme is based on the principles of direct instruction and reciprocal teaching. A pre‐test‐post‐test control group design was used to measure the effects of the programme. The results showed the programme to have a significant positive effect on the ability of the pupils to derive word meanings. Transfer of this ability to more general reading comprehension was not, however, found to occur. Finally, the readers for whom the programme is primarily intended, namely poor reading comprehenders, were found to benefit more from the training than average reading comprehenders.
7.
The goal of this longitudinal study was to describe the average development of word recognition, reading comprehension, vocabulary and spelling of poor and better readers during the elementary school period and to determine whether the differences between these readers increase over a period of 6 years of elementary education. Poor and better readers were defined to belong to the lowest 30% and to the higher 70% of a longitudinal sample, respectively. It appeared that for word recognition the developmental curves for the groups were very distinct and followed similar patterns. For reading comprehension, vocabulary and spelling, the developmental curves showed similar patterns with decreasing differences across grades, however. Clear seasonal effects were found for reading comprehension, vocabulary and spelling, while the seasonal effect for word recognition was restricted to the early grades. It appeared that students with initially poor abilities in word recognition and reading comprehension showed greater improvement over time on reading comprehension, vocabulary and spelling than students with initially better abilities in word recognition and reading comprehension. These findings contradict the existence of a Matthew effect for these skills. For word recognition, a clear differential effect could not be found: the groups did not differ systematically in mean development. The gap between the poor and better decoders did not widen over time for this skill; so a Matthew effect for word recognition was not supported. 相似文献
8.
The direct, retention, and transfer effects of repeated word and pseudoword reading were studied in a pretest, training, posttest, retention design. First graders (48 good readers, 47 poor readers) read 25 CVC words and 25 CVC pseudowords in ten repeated word reading sessions, preceded and followed by a transfer task with a different set of items. Two weeks after training, trained items were assessed again in a retention test. Participants either received phonics feedback, in which each word was spelled out and repeated; word feedback, in which each word was repeated; or no feedback. During the training, both good and poor readers improved in accuracy and speed. The increase in speed was stronger for poor readers than for good readers. The good readers demonstrated a stronger increase for pseudowords than for words. This increase in speed was most prominent in the first four sessions. Two weeks after training, the levels of accuracy and speed were retained. Furthermore, transfer effects on speed were found for pseudowords in both groups of readers. Good readers performed most accurately during the training when they received no feedback while poor readers performed most accurately during the training with the help of phonics feedback. However, feedback did not differentiate for reading speed or for effects after the training. The effects of repeated word reading were found to be stronger for poor readers than for good readers. Moreover, these effects were found to be stronger for pseudowords than for words. This indicates that repeated word reading can be seen as an important trigger for the improvement of decoding skills. 相似文献
9.
Jiménez JE del Rosario Ortiz M Rodrigo M Hernández-Valle I Ramírez G Estévez A O'Shanahan I de la Luz Trabaue M 《Journal of learning disabilities》2003,36(1):34-47
This study was designed to assess whether the effects of computer-assisted practice on visual word recognition differed for children with reading disabilities (RD) with or without aptitude-achievement discrepancy. A sample of 73 Spanish children with low reading performance was selected using the discrepancy method, based on a standard score comparison (i.e., the difference between IQ and achievement standard scores). The sample was classified into three groups: (1) a group of 14 children with dyslexia (age M = 103.85 months; SD = 8.45) who received computer-based reading practice; (2) a group of 31 "garden-variety" (GV) poor readers (age M = 107.06 months; SD = 6.75) who received the same type of instruction; and (3) a group of 28 children with low reading performance (age M = 103.33 months; SD = 9.04) who did not receive computer-assisted practice. Children were pre- and posttested in word recognition, reading comprehension, phonological awareness, and visual and phonological tasks. The results indicated that both computer-assisted intervention groups showed improved word recognition compared to the control group. Nevertheless, children with dyslexia had more difficulties than GV poor readers during computer-based word reading under conditions that required extensive phonological computation, because their performance was more affected by low-frequency words and long words. In conclusion, we did not find empirical evidence in favor of the IQ-achievement discrepancy definition of reading disability, because IQ did not differentially predict treatment outcomes. 相似文献
10.
Reading with Orthographic and Segmented Speech (ROSS) programs use talking computers to deal with deficits in word recognition and phonological awareness. With ROSS, children
read stories on a computer screen. Whenever they encounter a word they find difficult, they can request assistance by targeting
the word with a mouse. The program highlights the word in segments and then pronounces the segments in order. In previous
studies, children improved in reading, but children with relatively lower initial phonological awareness (PA) gained less
than the others. In order to maximize the benefits from ROSS for all children, the current study aimed to improve PA before
and while reading with ROSS, by using some programs based on theAuditory Discrimination in Depth method (Lindamood and Lindamood 1975), and others focusing on phoneme manipulation with speech feedback for all responses.
The study compared the effects of this training with training in Comprehension Strategies (CS) based on Reciprocal Teaching
techniques (Palincsar and Brown 1984), among second- to fifth-grade students with problems in word recognition. While both
groups received equal instructional time in small-groups and with the computer, the groups differed in how much time they
spent reading words in context. Whereas PA children spent half their computer time on PA exercises involving individual words
and half reading words in context with ROSS, the CS group spent all their computer time reading words in context with ROSS.
Both groups made significant gains in decoding, word recognition, and comprehension; however the PA groups gained significantly
more than the CS group on all untimed tests of phoneme awareness, word recognition, and nonsense word reading. The CS children
performed better on a test of time-limited word recognition; they also achieved higher comprehension scores, although only
while reading with a trainer. The PA children’s improved decoding skill led to greater accuracy, but slower responses with
difficult words, after one semester’s training. 相似文献
11.
Lynn Flowers Marianne Meyer James Lovato Frank Wood Rebecca Felton 《Annals of dyslexia》2001,51(1):49-71
There is persisting debate concerning the use of an ability-achievement discrepancy formula to define and identify learning
disabled—including reading disabled—students. This study employs mixed effects regression growth curve analysis to assess
the developmental course of discrepant and nondiscrepant readers (within poor readers) who were identified in third grade
and retested in fifth, eighth, and twelfth grades. The results showed that discrepancy status does not differentiate the developmental
course of basic reading skills (word identification or decoding), reading comprehension, or underlying cognitive abilities
(phonemic awareness and fluency) in poor readers. The ability-achievement discrepancy model is not supported. Educational
and legislative reasons for the persisting difficulties of poor readers are explored and recommendations for changes in public
policy are made.
Supported by National Institute of Child Health and Development (NICHD) PHS Grant No. P01 HD 21887 相似文献
12.
This study examined the effects of a syllable-based reading intervention for German second graders who demonstrated difficulties in the recognition of written words. The intervention focused on fostering word reading via syllable segmentation. The materials consisted of the 500 most frequent syllables typically read by 6- to 8-year-old children. The aims were to practice phonological recoding, consolidate orthographic representations of syllables, and routinize the access to these representations. Compared to children randomly assigned to a wait-list group, poor readers in the treatment condition showed significant improvements in standardized measures of phonological recoding, direct word recognition, and text-based reading comprehension after the 24-session intervention. Poor readers in the treatment condition also showed greater improvements in development of word recognition compared to children with efficient word recognition skills. The results provide evidence that a syllable-based reading intervention is a promising approach to increase struggling readers’ word recognition skills, which in turn will improve their reading comprehension. 相似文献
13.
While fluent reading is recognized as a primary goal of educational instruction, the methods that best promote the development of fluency remain unclear. Two experiments are reported that examined increases in reading fluency of a novel passage following two types of training. In the context training condition, children learned to read a set of target words in a story context, while in the isolated word training condition, fluency with a target word set was gained from a computerized word naming game. Transfer of fluency to reading these words in a new context was then measured by gains in reading speed, accuracy, and comprehension of a novel story. Results indicated that young readers showed speed benefits on transfer stories following both context and isolated word training, but the increases were larger following context training. 相似文献
14.
Word reading fluency, as indexed by the fast and accurate identification of single words, predicts both general reading ability and reading comprehension. This study compared the effects of context training and isolated word training on subsequent measures of word reading fluency. Good and poor readers were given 12 repetitions of two sets of words; 48 new words were learned in each condition. Words were presented in a story during context training and on a computer screen during isolated word training. Target words were read in isolation at test, randomly displayed within a series containing 72 untrained words. Results show that words trained in isolation are remembered longer and read faster when presented in isolation at test compared to words trained in context. Theoretical implications are discussed in relation to transfer appropriate processing. 相似文献
15.
A controversy whether developmental dyslexia is qualitatively different from other forms of reading disability has existed
among reading specialists for many years because poor readers, regardless of the labels attached to them, resemble each other
symptomatically (i.e., in reading achievement). For this reason, it is difficult to establish a priori criteria based on symptoms
to identify dyslexia and compare it with other forms of reading disability. One possible solution to this impasse is to see
if poor readers differ in the etiology of their reading disability and, if they do, then to see whether one group of poor
readers fits the traditional definition of dyslexia. This strategy was adopted in the present study. In this paper, it was
hypothesized that the etiology of dyslexia is different from that of other forms of reading disability because there is a
difference in the components that malfunction in dyslexia and other forms of reading disability. Studies have shown that the
two components that account for a large proportion of variance in reading are decoding and comprehension. Previous studies
also indicate that dyslexic children are deficient in decoding skills but not necessarily in comprehension. In this study,
reading-disabled children were divided into two groups on the basis of their listening comprehension. Children whose listening
comprehension was at or above grade level were placed in one group; poor readers with below-grade-level listening comprehension
were placed in the second group. Both groups, however, were matched for reading comprehension. The two groups and a control
group of normal readers were administered a number of tasks that were designed to assess the efficiency of the components
of reading. It was found that poor readers with normal listening comprehension were deficient in tasks that involved grapheme-phoneme
conversion (Component I, decoding). When tested on tasks that minimized decoding requirements, their reading comprehension
was comparable to that of normal readers. In contrast, the group with sub-average listening comprehension was poor in measures
of reading comprehension, even when decoding requirements were minimal. With the exception of very few children, this group
also had adequate decoding skills. Because poor readers with normal listening comprehension had average or above average IQ,
they conform to the traditional definition of dyslexia. Poor readers with below average listening comprehension had below
average IQ and could be considered as “general reading backward.” It was, therefore, concluded that the etiology of developmental
dyslexia is different from that of general reading backwardness.
In this paper, the termetiology refers to proximal causal factors such as decoding and comprehension and not to distal causal factors such as genetic and
neurological characteristics. 相似文献
16.
The purpose of this study was to investigate whether naming speed makes a contribution to the prediction of reading comprehension,
after taking into account the product of word decoding and listening comprehension (i.e., the Simple View of Reading; [Gough,
P.B. & Tunmer, W.E. (1986). Remedial and Special Education 7, 6–10]), and phonological awareness. In grade 3, word decoding was measured with the Woodcock [(1998). Woodcock Reading Mastery Tests – Revised. Circle Pines, MN: American Guidance Services]. Word Identification and Word Attack subtests, listening comprehension with
the Woodcock (1991) [Woodcock Language Proficiency Battery – Revised. Chicago: Riverside Publishing Company] test of Listening Comprehension, naming speed with a picture naming task, and 4 measures
assessed phonological awareness. Reading comprehension was assessed in grades 3, 4, and 5 with the Woodcock (1998) Passage
Comprehension subtest and in grade 5 with the Gates–MacGinitie reading test. The Simple View was evaluated twice: first, with
a pseudoword measure for decoding (Grapheme–Phoneme-conversion product) and, second, with a word identification measure for
decoding (word recognition product). Hierarchical regression and commonality analyses indicated that the decoding and listening
comprehension products accounted for considerable variance in reading comprehension. Naming speed had a small but significant
effect after accounting for the Grapheme–Phoneme-conversion product (2–3%), but little effect after accounting for the word-recognition
product (0–2%). Subgroup analyses indicated that naming speed had its primary effect for less able readers. Commonality analyses
supported the interpretation that naming speed contributes after the Grapheme–Phoneme-conversion product but not after the
word recognition product because naming speed has already had its effect upon word recognition. These results indicate that
it is important how the Simple View decoding term is defined, and that the Simple View may be incomplete, especially for less able readers. 相似文献
17.
Joseph R. Jenkins Lynn S. Fuchs Paul Van Den Broek Christine Espin Stanley L. Deno 《Learning disabilities research & practice》2003,18(4):237-245
The purpose of this study was to examine (1) the performance levels and the magnitude of performance difference between students with reading disabilities (RD) and skilled readers when reading a typical classroom text; (2) the hypothesis that students with RD have specific difficulty using context in such a way that reading fluency is affected; and (3) whether RD subtypes may be differentiated according to performance on contextual and context‐free reading tasks. Two groups of fourth graders (85 skilled readers and 24 students with RD) completed a standardized test of reading comprehension, read aloud a folktale, and read aloud the folktale's words in a randomly sequenced list. Performance was scored as correct rate and percentage correct. Based on the number of words per idea unit in the passage, we also estimated the rate at which reader groups encountered and processed text ideas. Compared to the RD group, skilled readers read three times more correct words per minute in context, and showed higher accuracy and rates on all measures. Both context and isolated word‐reading rates were highly sensitive to impairment. We found no evidence for RD subtypes based on these measures. Results illustrate differences in reading levels between the two groups, the temporal advantage skilled readers have in linking text ideas, how word reading differs as a function of task format and performance dimension, and how limited word‐identification skills (not comprehension) produce contextual reading difficulties for students with RD. 相似文献
18.
Reading comprehension is a multi-dimensional process that includes the reader, the text, and factors associated with the activity of reading. Most research and theories of comprehension are based primarily on research conducted with monolingual English speakers (L1). The present study was designed to investigate the cognitive and linguistic factors that have an influence on reading comprehension in English-as-a-Second-Language (ESL) speakers. The cognitive aspects of reading comprehension among L1 speakers and ESL speakers in the seventh grade were investigated. The performance of both groups was compared and the role of some relevant processes, including word reading, word reading fluency, phonological awareness, working memory, and morphological and syntactic awareness were assessed. Within this sample, three groups were examined: (1) children with poor comprehension (PC) in the absence of word reading difficulties (2) children with poor word reading and poor comprehension (poor readers, PR) (3) and children with both good word reading and comprehension abilities (good comprehenders, GC). The results demonstrated that a variety of cognitive processes, such as working memory and phonological, syntactic, and morphological awareness are important for reading comprehension and compromised in poor comprehenders. The GC group performed better than the PC group on all of the cognitive measures, indicating that comprehension depends on a variety of phonological, memory and linguistic processes and that adequate word recognition skill are important for reading comprehension. The prevalence of the ESL and L1 students was similar across the three reading groups. The ESL and L1 students demonstrated similar performance, indicating that the skills underlying reading comprehension are similar in the ESL and L1 students. This study demonstrated that ESL students are capable of developing word reading and reading comprehension skills that are as strong as those of their L1 peers. 相似文献
19.
We examined text memory in children with word reading deficits to determine how these difficulties impact representations
of text meaning. We show that even though children with poor word decoding recall more central than peripheral information,
they show a significantly bigger deficit relative to controls on central than on peripheral information. We call this the
centrality deficit and argue that it is the consequence of insufficient cognitive resources for connecting ideas together due to these children’s
resources being diverted from comprehension to word decoding. We investigated a possible compensatory mechanism for making
these connections. Because a text representation is a synthesis of text information and a reader’s prior knowledge, we hypothesized
that having knowledge of the passage topic might reduce or eliminate the centrality deficit. Our results support this knowledge
compensation hypothesis: The centrality deficit was evident when poor readers did not have prior knowledge, but was eliminated
when they did. This presents an exciting avenue to pursue for possible remediation of reading comprehension in children with
word identification difficulties. 相似文献
20.
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