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1.
In an earlier paper (Miles and Wheeler 1975) it was reported that dyslexic subjects, aged over 13, were less able than suitably
matched non-dyslexic subjects to respond correctly to arrays of tachistoscopically presented digits. A further experiment
is now reported involving a younger age-group: 15 dyslexic subjects, average age twelve and one-half, were matched for spelling
age with 15 non-dyslexic subjects, average age eight and one-half; and since the dyslexic subjects were appreciably less successful
it is argued that “maturational lag” does not, on its own, fully account for the difference in performance between the two
groups. A similar procedure was repeated with 41 dyslexic and 41 non-dyslexic subjects, all aged between 10.4 and 14.4, both
with and without the introduction of a visual masking stimulus immediately after the test stimulus. Twenty undergraduate “fast-readers,”
20 undergraduate “slow-readers,” and four undergraduate dyslexic subjects were also compared both on their responses to tachistoscopically
presented digits and on their performance in a visual search task. The results, taken in conjunction, suggest that dyslexia
can be regarded as some kind of limitation in the ability to process information, perhaps affecting in particular the “visual
code store” postulated by Posner et al. (1969).
This paper was prepared for deliveryin absentia at the 27th Annual Conference of The Orton Society, in New York City, November 1976. 相似文献
2.
Phonological processing skills and deficits in adult dyslexics 总被引：13，自引：0，他引：13
This article presents 4 experiments aimed at defining the primary underlying phonological processing deficit(s) in adult dyslexia. 5 phonological processes, all involving spoken language, were studied: phoneme perception, phoneme awareness, lexical retrieval of phonology, articulatory speed, and phonetic coding in verbal short-term memory. 2 differently ascertained adult dyslexic groups, familial dyslexics (n = 15) and clinic dyslexics (n = 15), were the subjects in each experiment. These dyslexic groups were chosen because deficits that persist until adulthood and that are found in differently ascertained dyslexic groups are more likely to be primary. Each dyslexic group was compared to 2 control groups, chronological age (CA) controls who were similar in age and sex, and younger reading age (RA) controls who were similar in reading age and sex. The main finding was a clear deficit in phoneme awareness in both dyslexic groups, with each dyslexic group performing significantly worse than both CA and RA controls. Moreover, performance on the 2 phoneme awareness tasks together uniquely accounted for substantial variance in nonword reading. The clinic but not the familial dyslexics appeared to have an additional deficit in verbal short-term memory. No clear deficits were found in either dyslexic group in phoneme perception, lexical retrieval, or articulatory speed. 相似文献
3.
This paper investigates Spanish dyslexic spelling abilities: specifically, the influence of syllabic linguistic structure (simple vs consonant cluster) on children's spelling performance. Consonant clusters are phonologically complex structures, so it was anticipated that there would be lower spelling performance for these syllabic structures than in simple ones, because of the poor phonological processing of dyslexic children. The participants were 31 dyslexic children, 31 chronological age‐matched children and 31 reading level‐matched children. A dictation task with words and pseudowords (with and without consonant clusters) was used. Word lexical frequency was controlled. The results show that the spelling of consonant clusters presents difficulties for dyslexic spelling performance despite this structure being orthographically consistent. Dyslexic children present a higher performance difference in items with consonant clusters than in simple items, compared with typically developing children. The work raises questions about the items used for the identification of dyslexic children's difficulties. 相似文献
4.
This study was conducted to determine if the phonemic awareness skills of college-aged dyslexic students (n=10) differ from
those of their nondyslexic peers (n=10). Both groups were tested on reading of real and nonsense words and a phoneme reversal
task. Although the dyslexic subjects had received considerable language remediation and were all succeeding at their college
studies at a level that did not significantly differ from the nondyslexic subjects, they performed significantly poorer on
two measures of phonemic awareness: reading of nonsense words and increased error rate and response time on reversal of common
three phoneme words. These results were interpreted to suggest that although the dyslexic subjects had improved their reading
skills there remained a fundamental deficit in their ability to process phonological information quickly and accurately. 相似文献
5.
This paper reports a research which examined the relationship between dyslexia and eye movement control in Spanish speaking children. The study compared the eye movements recordings of 30 dyslexic, 30 retarded and 30 normal readers, aged between 7 and 14, in one ocular tracking task and two reading tasks which differed in their degree of reading difficulty. Within each group the subjects were divided into 3 subgroups of 10 in accordance with the following chronological ages: 7–9, 10–11 and 12 years and above. Dependent variables were saccadics (number, size and fixation pause), regressives (number, size and fixation pause), total number of movements and percentage of regressives over the total number of movements. The following results were obtained: (1) In the two reading tasks significant differences were found between dyslexic and normal readers and between retarded and normal readers in most of the parameters, no differences being found between dyslexic and retarded readers except in a few parameters; (2) in the ocular tracking task significant differences both between dyslexic and normal readers and between dyslexic and retarded readers were found in all dependent variables, no differences being found between retarded and normal readers at all, and (3) the age factor produced a significant main effect in the two reading tasks indicating a general improvement of eye movements as age increases but an interaction effect with reading disability in the ocular tracking task-indicating a deterioration in eye movements in the dyslexic group as a function of age-was also found. The results are discussed in the context of alternative theoretical explanations of developmental dyslexia.This research was supported by grant PR82-1933 from the Spanish Consulting Committee for Scientific and Technological Research (CAYCIT). Requests for reprint should be sent to F. J. Martos, Departamento de Psicologia Experimental y Fisiologia del Comportamiento. Campus de Cartuja, Universidad de Granada. 18071 Granada, Spain. 相似文献
6.
The aim of this experiment was to investigate the use of orthographic analogies in conditions that involved making sense of print (picture‐word matching) and pronouncing print (reading aloud) for readers with dyslexia. An adapted version of the classic clue‐word paradigm developed by Goswami was used. Participants were 40 readers with dyslexia and 40 reading‐age‐matched comparison readers. Based on previous theory and research in this area, we predicted that readers with dyslexia would read significantly fewer analogous words than their reading‐age‐matched counterparts. In light of the supposition that word‐picture matching does not require the synthesised pronunciation of a word, we also predicted that readers with dyslexia might be less impaired at analogy use in the picture‐word matching than in the reading aloud condition. However, we found that the dyslexic group read significantly fewer analogous words at post‐test than their reading‐age‐matched peers in both conditions. Also, performance in overall word reading was better for both groups in the word‐picture matching condition. The implications of these results for theory and practice in reading development are discussed, and methodological limitations are noted. 相似文献
7.
Until recently the majority of research undertaken into dyslexia focused on English‐speaking dyslexics, who tend to make significantly more phonological than visual errors. This led to a major assumption about the possible cause of dyslexia being a lack of phonological awareness. According to the phonological deficit theory, the level of phonological consistency of a language determines not only the reading speed but also the amount and types of reading and spelling errors made by dyslexic people. This theory has been seriously challenged by the results of a number of studies in more phonologically consistent languages, such as Greek, Italian and Japanese, where morphology seemed to play a more crucial role than the phonological structure of a language per se. The 116 dyslexic people who took part in this experiment were matched on age, sex, IQ and psycho‐educational performance. A total of 58 US English‐speaking dyslexic people were compared to 58 Greek dyslexic people. Both groups met the diagnostic criteria. Results demonstrated that Greek dyslexics were found to make significantly fewer phonological errors (11.0%) than the US dyslexics (85.5%, p < .000), but comparatively more visual (66.8% to US 14.0%, P < .000) and grammatical errors (22.2% to US 0.1%, p < .000) than their English‐speaking counterparts. These data showed highly significant quantitative and qualitative spelling differences. Greek dyslexics could be accurately differentiated from the US English dyslexics based on the three types of spelling errors. 相似文献
8.
Two groups of adolescents with a childhood history of language impairment were compared with a group of developmentally dyslexic
young people of the same age and nonverbal ability. The study also included two comparison groups of typically developing
children, one of the same age as those in the clinical groups, and a younger comparison group of similar reading level to
the dyslexic students. Tests of spoken and written language skills revealed that the adolescents with dyslexia were indistinguishable
from those with resolved language impairments on spoken language tasks, and both groups performed at age-expected levels.
However, both dyslexic readers and those with resolved specific language impairments showed deficits in phonological awareness.
On written language tasks, a different pattern of performance was apparent. In reading and spelling, adolescents with dyslexia
performed only as well as those with persistent oral language impairments and younger controls. However, their reading comprehension
was better. The theoretical and educational implications of these findings are discussed. 相似文献
9.
Alfredo Ardila Krystal Garcia Melissa Garcia Joselyn Mejia Grace Vado 《Reading and writing》2017,30(2):387-400
Written bilingualism represents a particular type of bilingualism that is not frequently approached. The aim of this study was to investigate the writing and reading abilities of second-generation immigrants, Spanish–English bilinguals in South Florida. 58 participants (36 females, 22 males; 18–39 years of age) were selected. Both parents were native Spanish speakers and the home language was Spanish; 37 were born in the United States and 21 were born in a Latin American country, but arrived to the US before the age of 10. Equivalent reading and writing tests were administered both in Spanish and English. Performance was significantly higher in English than in Spanish in the following tests: reading aloud (speed and errors), writing sentences, spontaneous writing number of words, and spontaneous writing errors (spelling and grammatical). When comparing those participants born in the US and abroad, no significant differences were found in Spanish, but in English; participants born in the US did better in reading aloud (errors), and spontaneous writing errors (spelling and grammatical). It was concluded that reading and writing abilities are in general higher in English than in Spanish in this group of bilinguals, which is correlated with the language used in the school they attended. This study emphasize the importance to analyze not only oral but also written bilingualism. Toward the future, it would be particularly important to study written bilingualism in other types of bilingualism. 相似文献
10.
The purpose of this study was to examine the validity and reliability of Curriculum-Based Measures in writing for English learners. Participants were 36 high school English learners with moderate to high levels of English language proficiency. Predictor variables were type of writing prompt (picture, narrative, and expository), time (3, 5, and 7 min), and scoring procedure (words written, words spelled correctly, correct word sequences, correct minus incorrect word sequences). Criterion variables were teacher ratings of writing performance and student performance on the Test of Written Language-III, the writing subtest of the Test of Emerging Academic English, and the Minnesota state writing test. Results supported the validity and reliability of a 5 to 7-min writing sample written in response to a narrative or picture prompt and scored for percent of correct word sequences, correct minus incorrect word sequences, or words written plus correct minus incorrect word sequences. 相似文献
11.
The major findings of several research projects that investigated dyslexic college students are summarized in this paper.
Consistent findings of these investigations led to the following conclusions. 1) Developmental dyslexia is a syndrome made
up of the following four symptoms: slow rate of reading, error-prone oral reading, poor written spelling, and grammatically
incorrect writing; 2) all these symptoms could be traced to a poor mastery of the grapheme-phoneme relational rules; 3) developmental
dyslexia can be found in subjects who appear to have adequate oral language skills; 4) ex-dyslexics who appear to be “poor
spellers but good readers” have subtle reading deficits; and 5) the 20 dyslexic subjects investigated appear to constitute
a homogeneous group which raises questions regarding dyslexia subtypes. 相似文献
12.
Ute Dürrwächter Alexander N. Sokolov Jens Reinhard Gunther Klosinski Susanne Trauzettel-Klosinski 《Annals of dyslexia》2010,60(1):86-101
We combined independently the word length and word frequency to examine if the difficulty of reading material affects eye movements in readers of German, which has high orthographic regularity, comparing the outcome with previous findings available in other languages. Sixteen carefully selected German-speaking dyslexic children (mean age, 9.5 years) and 16 age-matched controls read aloud four lists, each comprising ten unrelated words. The lists varied orthogonally in word length and word frequency: high-frequency, short; high-frequency, long; low-frequency, short; low-frequency, long. Eye movements were measured using a scanning laser ophthalmoscope (SLO). In dyslexic children, fixation durations and the number of saccades increased both with word length and word frequency. The percentage of regressions was only increased for low-frequency words. Most of these effects were qualitatively similar in the two groups, but stronger in dyslexic children, pointing to a deficient higher-level word processing, especially phonological deficit. The results indicate that reading eye movements in German children are modulated by the degree of difficulty, and orthographic regularity of the language can determine the nature of modulation. The findings suggest that, similar to Italian but unlike English readers, German children prefer indirect sub-lexical strategy of grapheme-phoneme conversion. 相似文献
13.
The visual deficit hypothesis of development dyslexia has largely been abandoned because many of the phenomena that initially motivated it could not be replicated under controlled experimental conditions, while phonological processing deficits were found to provide a better explanation for the replicable phenomena. Nevertheless, many teachers and special educators continue to subscribe to the hypothesis that deficits of visual perception are a major cause of reading failure in dyslexia. As part of a larger family study, we reexamined the questions (1) whether probands and affected relatives in dyslexia families reverse easily confused letters more frequently under experimental conditions than normal readers from the same families, and (2) whether they show unusual facility in reading geometrically transformed text. The findings indicated that young dyslexia students reverse easily confused letters more often than normal readers. Reading group differences of letter reversal were significant in children from 7–10 years but not thereafter; and virtually no subject reversed letters when spelling whole words. Furthermore, dyslexic persons in every age group from 7–60 years actually took longer than normal readers to decode geometrically transformed text; and the time to decode transformed texts increased progressively with age after adolescence in both dyslexic persons and normal readers. Thus, reading group differences in decoding easily confused letters and reading geometrically transformed text do not support the visual deficit hypothesis and probably do not help to clarify the etiology of developmental dyslexia. 相似文献
14.
From a larger longitudinal study of 610 fourth graders in 17 inner city schools, 40 students were randomly selected from 10
classrooms rated high (i.e., top quartile) or low (i.e., bottom quartile) in quality of writing instruction in grades 3 and
4. The written compositions of these students were scored in three ways: (1) according to a rating scale within a reliable
scoring rubric, (2) according to countable surface features such as words correctly sequenced, and (3) according to the frequency
of specific phonological, morphosyntactic, and orthographic errors in the children’s writing. A multivariate analysis of variance
was conducted to examine whether quality of writing instruction in grades 3 and 4 predicted students’ writing performance
at the end of grade 4. Students who received high quality instruction in fourth grade wrote longer compositions with more
correctly spelled words than those who had poor quality writing instruction. There was a tendency for two years of quality
instruction to be better than one, and, among students who had poor quality instruction in grade 3, compositions were longer
in grade 4 when they received quality instruction in fourth grade. Foundational problems of language formulation, production
and representation, however, were ubiquitous across the sample. Although these students were within the average range on standardized
reading tests, spelling and writing were not developing at average levels. The study confirms the urgent need for more and
better writing instruction for high risk, minority children. 相似文献
15.
This 5-year follow-up study examined the predictive validity of the Kaufman Assessment Battery for Children (K-ABC) for 39 children identified during preschool as exhibiting language impairment (n = 10), behavior control deficits (n = 13), or normal language and behavioral development (n = 16). Mean age at follow-up was 9.75 years. The results generally supported the predictive validity of the K-ABC (p<.001). However, analyses by group indicated that the relationship between baseline K-ABC and follow-up K-ABC, language, and achievement measures for the language-impaired subjects was weak (p>.05). Although these results must be interpreted cautiously because of the small sample size, they suggest that for young children likely to be referred as at risk for future learning problems, the K-ABC may not be useful for prediction of later cognitive skills. Implications for practitioners are discussed. 相似文献
16.
The role of lexical knowledge and related linguistic components in typical and poor language comprehenders of Chinese 总被引：1，自引：0，他引：1
The present study adapted the “Blueprint of the Reader” in comprehending language by Perfetti [2000, C. M. Brown & P. Hagoort.
(Eds.), The neurocognition of language (pp. 167–208). Oxford, UK: Oxford University Press] as a framework for understanding Chinese language and reading comprehension
in a group of 361 secondary Forms 1, 3 and 4 Cantonese-speaking Chinese students (mean age of 15 years) in Hong Kong. This
framework with some modifications was tested with nine specially designed Chinese language and reading tasks with reasonably
high reliability and surface validity. The main hypothesis was that lexical knowledge consisting of derivational morphology;
correction of characters, words and sentences; segmentation of text into phrases and sentences; and writing to dictation should
explain considerable individual variations, as shown in the English literature. This was tested with component analyses and
multiple regression analyses. The total battery accounted for 66.80% of the variation while lexical knowledge alone explained
33.51% of the individual variation in the overall school performance in Chinese reading and writing. The second hypothesis
was that subgroups of poor and good language and reading comprehenders in Chinese would be expected to show overlapping yet
different component structures and their performance in the individual component tasks would be expected to differ as tested
with analyses of variance. The results confirmed this hypothesis. Task analyses of the written protocols of essay writing
and of morphological processing (prefixing and suffixing) provided insight into well-formed and poorly formed writing and
word formation according to principles of Chinese psycholinguistics and yielded information for theory-based practice. 相似文献
17.
Is the dual route model of word recognition useful in explaining individual differences in reading behaviors for most developmental dyslexics? Many past case studies of surface and phonological acquired dyslexics and a few similar studies of developmental dyslexia have suggested this might be so. The present study investigated individual differences among a group of 65 dyslexics, age 10 to 13, in reading, phonemic segmentation, and word retrieval. The dyslexics’ performance was compared to that of 65 reading age controls and 17 age-matched good readers. The research questions were: (1) Are there discrete subgroups of developmental dyslexics as suggested by the case studies? (2) How do oral language measures relate to the various reading tasks? The data indicated there were no discrete subgroups within the group of dyslexics; in addition, the variability in performance on reading tasks was quite similar for the dyslexic and reading age-control groups. A few dyslexics resembled phonological dyslexics and surface dyslexics, but these subjects were still part of a continuum. We also report the relationship between phonemic segmentation and word retrieval and various reading tasks. It appears that dyslexics at extreme ends of the continuum may exhibit quite different patterns from each other in their oral language task performance as well as in their reading. 相似文献
18.
Abstract Seven primary school children with behaviour difficulties showed low levels of on‐task writing behaviour, high levels of off‐task disruptive behaviour and a low number of words written during regular classroom story writing sessions. Introduction of self‐recording of work behaviours during story writing for the whole class of 34 children was associated with increased on‐task, decreased off‐task disruptive behaviour and an increased number of words written for target children. There was also an increased number of words written by six other children for whom story writing data was collected. Introduction of say‐do correspondence training for five of the target children showed further increases in independent story writing behaviour and reductions in off‐task behaviours that disrupted the written language sessions. 相似文献
19.
Cross-linguistic studies suggest that the orthographic system determines the reading performance of dyslexic children. In opaque orthographies, the fundamental feature of developmental dyslexia is difficulty in reading accuracy, whereas slower reading speed is more common in transparent orthographies. The aim of the current study was to examine the extent to which different variables of words affect reaction times and articulation times in developmental dyslexics. A group of 19 developmental dyslexics of different ages and an age-matched group of 19 children without reading disabilities completed a word naming task. The children were asked to read 100 nouns that differed in length, frequency, age of acquisition, imageability, and orthographic neighborhood. The stimuli were presented on a laptop computer, and the responses were recorded using DMDX software. We conducted analyses of mixed-effects models to determine which variables influenced reading times in dyslexic children. We found that word naming skills in dyslexic children are affected predominantly by length, while in non-dyslexics children the principal variable is the age of acquisition, a lexical variable. These findings suggest that Spanish-speaking developmental dyslexics use a sublexical procedure for reading words, which is reflected in slower speed when reading long words. In contrast, normal children use a lexical strategy, which is frequently observed in readers of opaque languages. 相似文献
20.
One influential theory of literacy development, the constructivist perspective, claims that young children believe that writing represents meaning directly and that the appearance of a written word should reflect characteristics of its referent. There has not been strong evidence supporting this idea, however. Circumventing several methodological concerns with previous studies, we examined written spellings of young children who did not yet use letters to represent the sounds of words, that is, prephonological spellers. We identified 38 prephonological spellers (M age = 4 years, 2 months) and measured the area of their writing productions. Prephonological spellers made significantly larger productions for words representing large objects than those representing small objects. This effect held true after controlling for the influences of other variables, including size of writing on previous trials and order of trial in a session. Our results suggest that young children sometimes use drawing-like features to communicate the meaning of words when writing. 相似文献