Cognitive profiles of reading disability: Comparisons of discrepancy and low achievement definitions.

Examined the validity of distinguishing children with reading disabilities according to discrepancy and low-achievement definitions by obtaining 4 assessments of expected reading achievement and 2 assessments of actual reading achievement for 199 children (aged 7.5–9.5 yrs). These assessments were used to subdivide the sample into discrepancy and low-achievement definitional groups who were compared on 9 cognitive variables related to reading proficiency. Results did not support the validity of discrepancy vs low achievement definitions. Although differences between Ss with impaired reading and Ss without impaired reading were large, differences between Ss with impaired reading who met IQ-based discrepancy definitions and those who met low reading achievement definitions were small or not significant. Measures of phonological awareness were robust indicators of differences between Ss with impaired reading and Ss without impaired reading regardless of how reading disability was defined. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of word imagery on reading performance as a function of reader ability.

Conducted 3 experiments on the effects of word imagery, length, and frequency on reading difficulty. Ss were 27 8-10 yr old poor readers in Exp I, 24 8-11 yr old good readers in Exp II, and 10 poor and 10 good readers (mean age 9 yrs 6 mo) in Exp III. High frequency words were found to be easier to read for both good and poor readers. High-imagery words were easier to read for poor readers only. Word length had little effect on reading difficulty for either good or poor readers. The differential effect of word imagery on reading difficulty for good and poor readers is interpreted in terms of the types of reading strategy used--phonics for good readers and whole word reading for poor readers. When children are forced to learn to read words by a whole word method, word imagery predicts ease of learning for both good and poor readers. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Research on visual word recognition: From verbal learning to parallel distributed processing.

Over the past 30 yrs, research on visual word recognition has contributed greatly to the understanding of how information is processed, represented, and accessed in the cognitive system. Today, word recognition continues to serve as a rich domain for modelling and investigating core issues in cognition. In addition, research on word recognition has been used to improve assessment and instruction of reading for children and adults. This article provides a brief overview of some trends and developments in word recognition research over the past few decades. This overview is not meant to be exhaustive (or unbiased); it is intended to give readers from outside the area a feel for why word recognition is such an important domain for cognitive research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Recherche sur la reconnaissance visuelle de mots: De l’apprentissage verbal au traitement parallèle réparti.

Over the past 30 yrs, research on visual word recognition has contributed greatly to the understanding of how information is processed, represented, and accessed in the cognitive system. Today, word recognition continues to serve as a rich domain for modelling and investigating core issues in cognition. In addition, research on word recognition has been used to improve assessment and instruction of reading for children and adults. This article provides a brief overview of some trends and developments in word recognition research over the past few decades. This overview is not meant to be exhaustive (or unbiased); it is intended to give readers from outside the area a feel for why word recognition is such an important domain for cognitive research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive profiles of difficult-to-remediate and readily remediated poor readers: Early intervention as a vehicle for distinguishing between cognitive and experiential deficits as basic causes of specific reading disability.

Reading impaired first graders were given daily tutoring as a "first cut" diagnostic to aid in distinguishing between reading difficulties caused by basic cognitive deficits and those caused by experiential deficits. Reading achievement in most of these children was found to be within or above the average range after one semester of remediation. Children who were difficult to remediate performed below both children who were readily remediated and normal readers on kindergarten and first-grade tests evaluating phonological skills, but not on tests evaluating visual, semantic and syntactic skills. The results are consistent with convergent findings from previous research suggesting that reading problems in some poor readers may be caused primarily by phonological deficits. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Phonological awareness and reading acquisition in English- and Punjabi-speaking Canadian children.

This study examined whether the same component processes are involved in reading acquisition for native and nonnative speakers of English in the 1st grade. The performance of 88 children was examined on tasks assessing reading skill, phonological processing, and syntactic awareness. Fifty children were native English speakers (L1), and 38 children were from Punjabi-speaking families (ESL). Although measures of word recognition and phonological processing successfully discriminated between average and poor readers, they did not discriminate between the 2 language groups. Analyses of word reading errors revealed similar error patterns for ESL and L1 children, yet different error patterns for average and poor readers. For both L1 and ESL children, reading difficulties appear to be strongly linked with impaired phonological processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive processes as predictors of word recognition and reading comprehension in learning-disabled and skilled readers: Revisiting the specificity hypothesis.

Examines how cognitive processes interrelate as well as predict learning-disabled (LD) readers' word recognition and reading comprehension performance. Correlations between phonological, orthographic, semantic, metacognitive, and working memory measures with reading performance were examined in LD and skilled readers (aged 8–12 yrs). LD Ss were deficient on all cognitive processes compared with skilled Ss, but these differences do not reflect IQ scores. Reading ability group differences emerged on a component composed primarily of working memory measures (referred to as "g") as well as unique components, suggesting that these differences emerge on both general and specific (modular) processes. G best predicts reading comprehension for both groups, and phonological awareness best predicts skilled Ss' pseudoword reading, whereas g best predicts LD Ss' pseudoword performance. Overall, LD Ss' information processing difficulties were described within a general working memory model that views such children as having difficulty accessing and coordinating both general and specific processes. Results suggest that the cognitive processes that contribute to reading deficits are best understood in the context of their combination with other operations rather than in isolation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Word-recognition skills of adults with childhood diagnoses of dyslexia.

This study investigated whether the same pattern of reading deficits that characterize dyslexic children continue to characterize this population as it reaches adulthood. Standardized and experimental reading tasks were administered to college students with childhood diagnoses of dyslexia, and to age-matched and reading-matched control subjects. Despite relatively high levels of reading comprehension, dyslexics showed inaccurate and particularly slow word-recognition skills. Dyslexics did not use age-appropriate, and in some cases reading-level-appropriate word recognition processes. They relied heavily on the use of spelling–sound information, syllabic information, and context for word recognition. Word-recognition difficulties reflected poor knowledge of spelling–sound correspondences. Adult dyslexics' patterns of performance were most similar to those of beginning skilled readers and to dyslexic children. The term arrest rather than deviance or delay best characterizes the word-recognition skills of adult dyslexics. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Acquisition of literacy: A longitudinal study of children in first and second grade.

Tested a model of early literacy acquisition regarding the interrelation of word recognition, spelling, reading comprehension, and writing skills, using longitudinal data collected from 80 children who passed from 1st through 2nd grades. Incoming characteristics (i.e., ethnicity, IQ, oral language) and the rate at which each S progressed through his or her reading books were examined in relation to growth in phonemic awareness, spelling/sound knowledge, and lexical knowledge. The impact of these factors on development in word recognition and spelling was explored, along with the relation of word recognition and listening comprehension to reading comprehension, and the relation of spelling and ideation to story writing. It was hypothesized that poor reading achievement in minority students would be partially attributable to poorer phonemic awareness of school English due to dialect, 2nd language, and cultural differences. Results support the hypothesis, suggesting the strong importance of phonemic awareness in literacy acquisition. The relation between word recognition and spelling was strong due to reliance on similar sources of knowledge. The relation between reading comprehension and writing appeared less strong, suggesting that the generation of ideas involved in story production is not isomorphic to the processes involved in reading comprehension. (61 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Morphological awareness: A key to understanding poor reading comprehension in English.

This longitudinal study examined the performance of poor comprehenders on several reading-related abilities in the late elementary school years. We identified 3 groups of readers in Grade 5 who were matched on word reading accuracy and speed, nonverbal cognitive ability, and age: unexpected poor comprehenders, expected average comprehenders, and unexpected good comprehenders. We compared these groups in Grade 5 and, retrospectively, in Grade 3. The 3 groups performed similarly on phonological awareness, naming speed, and orthographic processing tasks but differed in morphological awareness, even when vocabulary was controlled statistically. Unexpected poor comprehenders performed more poorly than expected average comprehenders in morphological derivation at Grade 5 but not in Grade 3; in contrast, expected average comprehenders performed more poorly than unexpected good comprehenders at Grade 3, but these groups did not differ in Grade 5. Our findings suggest that poor morphological awareness contributes to reading comprehension difficulties and that children with different reading comprehension profiles may learn morphology at different rates. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Phonological and orthographic processing of Hebrew words: electrophysiological aspects

Brain activity among 15 male, college-level, normal readers in Israel was examined during phonological and orthographic word-recognition tasks. Both electrophysiological (event-related potentials, or ERPs) and behavioral measures were obtained. Data indicated that (a) behavioral accuracy was almost perfect for all the experimental tasks, and (b) although P200 and N400 ERP components were elicited in the experimental tasks, the latencies of those components were significantly longer and their amplitudes significantly higher in the phonological task. Variations in vowel information had no effect on word recognition in either type of task. The results suggest that among skilled readers of Hebrew, phonological processing during word recognition may be more effortful and may demand greater cognitive resources than orthographic processing. Furthermore, the additional phonological information represented in vowels appears to contribute little to word recognition in this population. These findings support earlier research on skilled reading in Hebrew as well as current theoretical models of reading.     

Predictors of reading comprehension for struggling readers: The case of Spanish-speaking language minority learners.

This longitudinal study examined the process of English reading comprehension at age 11 years for 173 low-achieving Spanish-speaking children. The influence of growth rates, from early childhood (age 4.5 years) to pre-adolescence (age 11 years), in vocabulary and word reading skills on this complex process were evaluated with structural equation modeling. Standardized measures of word reading accuracy and productive vocabulary were administered annually, in English and Spanish, and English reading comprehension measures were administered at age 11 years. Latent growth curve analyses revealed that English skills accounted for all unique variance in English reading comprehension outcomes. Further, expected developmental shifts in the influence of word reading and vocabulary skills over time were not shown, likely on account of students' below-grade-level reading comprehension achievement. This work underscores the need for theoretical models of comprehension to account for students' skill profiles and abilities. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relationship of reading achievement to verbal processing abilities.

Examined the relationship between reading achievement and ability to process verbal information in 67 achieving and 67 nonachieving readers drawn from 4th-grade classes. Verbal processing abilities were evaluated with 10 instruments, which included measures of memory span, associative learning, semantic association, automatic word processing, and time taken to name pictures, read words, and recode (pronounce) pseudowords. Achieving readers performed better on all measures except automatic word processing. Factor analysis yielded 3 factors, labeled Verbal Coding Speed, Memory Span, and Verbal Operations. Reading comprehension had high loadings on the 1st and 3rd factors but had a low loading on Memory Span. Results suggest that 1 primary component of the reading achievement of 4th-grade children is the ability to perform operations or manipulations on verbal material. (43 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The cognitive and linguistic foundations of early reading development: A Norwegian latent variable longitudinal study.

The authors present the results of a 2-year longitudinal study of 228 Norwegian children beginning some 12 months before formal reading instruction began. The relationships between a range of cognitive and linguistic skills (letter knowledge, phoneme manipulation, visual–verbal paired-associate learning, rapid automatized naming (RAN), short-term memory, and verbal and nonverbal ability) were investigated and related to later measures of word recognition in reading. Letter knowledge, phoneme manipulation, and RAN were independent longitudinal predictors of early reading (word recognition) skills in the regular Norwegian orthography. Early reading skills initially appeared well described as a unitary construct that then showed rapid differentiation into correlated subskills (word decoding, orthographic choice, text reading, and nonword reading) that showed very high levels of longitudinal stability. The results are related to current ideas about the cognitive foundations of early reading skills. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cross-language transfer of phonological awareness.

Investigated the factors influencing the English word identification performance of Spanish-speaking beginning readers. Beginning readers were administered tests of letter naming, Spanish phonological awareness, Spanish and English word recognition, and Spanish and English oral proficiency. Multiple-regression analyses revealed that the readers' performance on English word and pseudoword recognition tests was predicted by the levels of both Spanish phonological awareness and Spanish word recognition, thus indicating cross-language transfer. In contrast, neither English nor Spanish oral proficiency affected word-identification performance. Results suggest a specific way in which 1st-language learning and experience can aid children in the beginning stages of reading. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reading in Arabic orthography: the effect of vowels and context on reading accuracy of poor and skilled native Arabic readers in reading paragraphs, sentences, and isolated words

This study investigated the effect of vowels and context on the reading accuracy of poor and skilled native Arabic readers in reading paragraphs, sentences, and words. Central to this study is the belief that reading theory today should consider additional variables, especially when explaining the reading process in Arabic orthography among poor and normal/skilled readers. This orthography has not been studied. Reading theory today is the sum of conclusions from studies conducted in Latin orthography. The subjects were 77 native Arabic speakers, 34 of them poor readers and 44 normal/skilled readers. The subjects had to read in Arabic 15 paragraphs, 60 sentences, and 210 words. There were three reading conditions: fully vowelized, partially vowelized, and unvowelized texts. The results showed that vowels and contexts were important variables to facilitate word recognition in poor and normal/skilled readers in Arabic orthography.     

Improvement in reading rate under independent and difficult text levels: Influences on word and comprehension skills.

Improving reading rate can be difficult for poor readers. In this experiment, we investigated the impact of improvement in reading rate on other aspects of reading, including word recognition, decoding, vocabulary, and comprehension. Poor readers in Grades 2 or 4 (N = 123) were randomly assigned to 1 of 3 conditions: practice reading text at their independent reading level (92%–100% word reading accuracy), practice reading text at a difficult reading level (80%–90% accuracy), or an untreated control. Students in practice conditions read aloud to an adult listener who assisted with difficult words. Before, midway, and following 20 weeks of treatment, we assessed improvement in reading rate, word recognition, decoding, vocabulary, and comprehension across conditions and determined the impact of improved rate on comprehension. We found significant differences favoring the treatment groups in rate, word recognition, and comprehension, but not in decoding or vocabulary. We found no significant differences in growth between levels of text difficulty. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of word reading fluency and spelling in a consistent orthography: An 8-year follow-up.

In a longitudinal study, development of word reading fluency and spelling were followed for almost 8 years. In a group of 115 students (65 girls, 50 boys) acquiring the phonologically transparent German orthography, prediction measures (letter knowledge, phonological short-term memory, phonological awareness, rapid automatized naming, and nonverbal IQ) were assessed at the beginning of Grade 1; reading fluency and spelling were tested at the end of Grade 1 as well as in Grades 4 and 8. Reading accuracy was close to ceiling in all reading assessments, such that reading fluency was not heavily influenced by differences in reading accuracy. High stability was observed for word reading fluency development. Of the dysfluent readers in Grade 1, 70% were still poor readers in Grade 8. For spelling, children who at the end of Grade 1 still had problems translating spoken words into phonologically plausible letter sequences developed problems with orthographic spelling later on. The strongest specific predictors were rapid automatized naming for reading fluency and phonological awareness for spelling. Word recognition speed was a relevant and highly stable indicator of reading skills and the only indicator that discriminated reading skill levels in consistent orthographies. Its long-term development was more strongly influenced by early naming speed than by phonological awareness. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Altering the brain circuits for reading through intervention: A magnetic source imaging study.

Intervention-related changes in spatiotemporal profiles of regional brain activation were examined by whole-head magnetoencephalography in 15 children with severe reading difficulties who had failed to show adequate progress to quality reading instruction during Grade 1. Intensive intervention initially focused on phonological decoding skills (for 8 weeks) and, during the subsequent 8 weeks, on rapid word recognition ability. Clinically significant improvement in reading skills was noted in 8 children who showed "normalizing" changes in their spatiotemporal profiles of regional brain activity (increased duration of activity in the left temporoparietal region and a shift in the relative timing of activity in temporoparietal and inferior frontal regions). Seven children who demonstrated "compensatory" changes in brain activity (increased duration of activity in the right temporoparietal region and frontal areas, bilaterally) did not show adequate response to intervention. Nonimpaired readers did not show systematic changes in brain activity across visits. (PsycINFO Database Record (c) 2010 APA, all rights reserved)