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PubMed1998

Sensitivity to dynamic auditory and visual stimuli predicts nonword reading ability in both dyslexic and normal readers.

BACKGROUND: Developmental dyslexia is a specific disorder of reading and spelling that affects 3-9% of school-age children and adults. Contrary to the view that it results solely from deficits in processes specific to linguistic analysis, current research has shown that deficits in more basic auditory or visual skills may contribute to the reading difficulties of dyslexic individuals. These might also have a crucial role in the development of normal reading skills. Evidence for visual deficits in dyslexia is usually found only with dynamic and not static stimuli, implicating the magnocellular pathway or dorsal visual stream as the cellular locus responsible. Studies of such a dissociation between the processing of dynamic and static auditory stimuli have not been reported previously. RESULTS: We show that dyslexic individuals are less sensitive both to particular rates of auditory frequency modulation (2 Hz and 40 Hz but not 240 Hz) and to dynamic visual-motion stimuli. There were high correlations, for both dyslexic and normal readers, between their sensitivity to the dynamic auditory and visual stimuli. Nonword reading, a measure of phonological awareness believed crucial to reading development, was also found to be related to these sensory measures. CONCLUSIONS: These results further implicate neuronal mechanisms that are specialised for detecting stimulus timing and change as being dysfunctional in many dyslexic individuals. The dissociation observed in the performance of dyslexic individuals on different auditory tasks suggests a sub-modality division similar to that already described in the visual system. These dynamic tests may provide a non-linguistic means of identifying children at risk of reading failure.

Acoustic Stimulation↗
PubMed2003

The E-Z reader model of eye-movement control in reading: comparisons to other models.

The E-Z Reader model (Reichle et al. 1998; 1999) provides a theoretical framework for understanding how word identification, visual processing, attention, and oculomotor control jointly determine when and where the eyes move during reading. In this article, we first review what is known about eye movements during reading. Then we provide an updated version of the model (E-Z Reader 7) and describe how it accounts for basic findings about eye movement control in reading. We then review several alternative models of eye movement control in reading, discussing both their core assumptions and their theoretical scope. On the basis of this discussion, we conclude that E-Z Reader provides the most comprehensive account of eye movement control during reading. Finally, we provide a brief overview of what is known about the neural systems that support the various components of reading, and suggest how the cognitive constructs of our model might map onto this neural architecture.

Eye Movements↗
PubMed1989

Nursery rhymes, phonological skills and reading.

Nursery rhymes are an almost universal part of young English-speaking children's lives. We have already established that there are strong links between children's early knowledge of nursery rhymes at 3;3 and their developing phonological skills over the next year and a quarter. Since such skills are known to be related to children's success in learning to read, this result suggests the hypothesis that acquaintance with nursery rhymes might also affect children's reading. We now report longitudinal data from a group of 64 children from the age of 3;4 to 6;3 which support this hypothesis. There is a strong relation between early knowledge of nursery rhymes and success in reading and spelling over the next three years even after differences in social background, I.Q and the children's phonological skills at the start of the project are taken into account. This raises the question of how nursery rhymes have such an effect. Our answer is that knowledge of nursery rhymes enhances children's phonological sensitivity which in turn helps them to learn to read. This paper presents further analyses which support the idea of this path from nursery rhymes to reading. Nursery rhymes are related to the child's subsequent sensitivity to rhyme and phonemes. Moreover the connection between knowledge of nursery rhymes and reading and spelling ability disappears when controls are made for differences in these subsequent phonological skills.

Achievement↗
PubMed2005

Parent-child picture-book reading, mothers' mental state language and children's theory of mind.

This study focuses on parent-child book reading and its connection to the development of a theory of mind. First, parents were asked to report about frequency of parent-child storybook reading at home. Second, mothers were asked to read four picture-books to thirty-four children between 4;0 and 5;0. Both frequency of parent-child storybook reading at home, and mother's use of mental state terms in picture-books reading tasks were significantly associated with success on false belief tasks, after partialling out a number of potential mediators such as age of children, verbal IQ, paternal education, and words used by mothers in joint picture-book reading. Among the different mental state references (cognitive terms, desires, emotions and perceptions), it was found that the frequency and variety of cognitive terms, but also the frequency of emotional terms correlated positively with children's false belief performance. Relationships between mental state language and theory of mind are discussed.

Adult↗
PubMed2000

Male prevalence for reading disability is found in a large sample of black and white children free from ascertainment bias.

Male vulnerability to neurodevelopmental disorders remains controversial. For one disorder, reading disability, this sex bias has been interpreted as an artifact of referral bias. We investigated sex differences for the incidence of reading disability within a large prospective sample of White (N = 16,910) and Black (N = 15,313) children derived from the National Collaborative Perinatal Project (NCPP). Children were classified as having either moderate or severe reading disability when they had reading scores lower than 1.5 or 2.0 standard errors of prediction, respectively, given their age and intelligence. Reading disability was about twice as common in boys than girls (p < .001), irrespective of race, severity of disability, or exclusion of children with attentional disturbances or high activity levels. We conclude that there is a clear sex bias toward males for the incidence of reading disabilities.

Black or African American↗
PubMed2004

Reading and writing skills in young adults with spina bifida and hydrocephalus.

Reading and writing were studied in 31 young adults with spina bifida and hydrocephalus (SBH). Like children with this condition, young adults with SBH had better word decoding than reading comprehension, and, compared to population means, had lower scores on a test of writing fluency. Reading comprehension was predicted by word decoding and listening comprehension. Writing was predicted by fine motor finger function, verbal intelligence, and short-term and working memory. These findings are consistent with cognitive models of reading and writing. Writing, but not reading, was related to highest level of education achieved and writing fluency predicted several aspects of functional independence. Reading comprehension and writing remain deficient in adults with SBH and have consequences for educational attainments and functional independence.

Adolescent↗
PubMed2005

Neuropsychological impairment in racial/ethnic minorities with HIV infection and low literacy levels: effects of education and reading level in participant characterization.

Educational attainment is an important factor in the interpretation of cognitive test scores but years of education are not necessarily synonymous with educational quality among racial/ethnic minority populations. This study investigated the comparability of educational attainment with reading level and examined whether discrepancies in education and reading level accounted for differences in neuropsychological test performance between HIV+ racial/ethnic minority and nonminority participants. Study participants (N=200) were derived from the Manhattan HIV Brain Bank (MHBB) where 50% of the cohort had < or =8th grade reading level but only 5% had < or =8 years of education. Significantly lower reading ability and education was found among African Americans and Hispanics, and these participants were more likely to have discrepant reading and education levels compared to non-Hispanic Whites. Discrepancy in reading and education level was associated with worse neuropsychological performance while racial/ethnic minority status was not. As years of schooling overestimated racial/ethnic minority participants' educational quality, standard norms based on education may inflate impairment rates among racial/ethnic minorities. Identifying appropriate normative standards is and will continue to be important in the detection of cognitive impairment in racial/ethnic minorities with HIV.

Adult↗
PubMed1999

The effect of Arabic vowels on the reading comprehension of second- and sixth-grade native Arab children.

This study investigated the effect of Arabic vowels on the reading comprehension of native Arabic speakers. This issue has not been addressed yet. Two groups of native Arabic speakers were randomly sampled, one from two elementary schools in the Haifa area, and the other from two elementary schools in Nazareth. Both groups in both experiments read Arabic texts in two reading conditions, vowelized and unvowelized; the older group (n = 74) answered 10 multiple-choice comprehension questions about each story, and the younger group (n = 71) answered seven multiple-choice comprehension questions. The results revealed that vowels were a significant facilitator of reading comprehension in both age groups. Considering these results, reading in Arabic orthography is not an autonomous word recognition process. An alternative approach is suggested for reading Arabic.

Arabs↗
PubMed1997

Inattention-hyperactivity and reading achievement in children from low-income families: a longitudinal model.

This study examined how preschool inattention-hyperactivity is related to elementary school reading achievement. Prereading skills were hypothesized to be a link between them. This link was explored using longitudinal data on 105 low-socioeconomic-status (SES) children's inattentive-hyperactive behavior and prereading skills in Head Start and in kindergarten and their inattentive-hyperactive behavior and reading skills in first grade. A model of this relationship was tested using structural equation modeling. The results failed to show a significant path between inattention-hyperactivity and prereading skills at both the Head Star and kindergarten levels. A significant path was found between first grade inattention-hyperactivity and reading skills, confirming that the strong relationship between inattention-hyperactivity and poor reading achievement commonly found in children from other SES levels was also significant in this low-SES sample. Strong relationships were found between prereading skills and reading skills, as well as among hyperactivity levels at the three grades. The issue of the direction of the path of influence between attention-behavior and reading achievement is addressed briefly; however, the results indicate that further longitudinal work is necessary to resolve this issue.

Achievement↗
PubMed1998

Analyzing the development of individual differences in terms of Matthew effects in reading: results from a Dutch Longitudinal study.

The Matthew effect hypothesis provides a theoretical framework to describe the development of individual differences in reading ability. The model predicts an increase of individual differences in reading. Reciprocal relationships between reading and other factors seem to cause these increasing differences. This longitudinal study of 3 years was concerned with uncovering the existence and causes of increasing individual differences in reading in the early elementary grades. Data were analyzed within a structural equation modeling framework. The results clearly indicate increasing individual differences for word recognition skills. For reading comprehension, no such effects could be established for this limited time period. More important, some evidence for interactive relationships between reading and other cognitive skills, behaviors, and motivational factors, hypothesized to cause increasing differences between readers, was found.

Child↗
PubMed2001

Using working memory theory to investigate the construct validity of multiple-choice reading comprehension tests such as the SAT.

When taking multiple-choice tests of reading comprehension such as the Scholastic Assessment Test (SAT), test takers use a range of strategies that vary in the extent to which they emphasize reading the questions versus reading the passages. Researchers have challenged the construct validity of these tests because test takers can achieve better-than-chance performance even if they do not read the passages at all. By using an individual-differences approach that compares the relative power of working memory span to predict SAT performance for different test-taking strategies, the authors show that the SAT appears to be tapping reading comprehension processes as long as test takers engage in at least some reading of the passages themselves.

Adolescent↗
PubMed1999

Reading skills in hyperlexia: a developmental perspective.

Hyperlexia is characterized by advanced word-recognition skills in individuals who otherwise have pronounced cognitive, social, and linguistic handicaps. Language, word recognition, and reading-comprehension skills are reviewed to clarify the nature and core deficits associated with the disorder. It is concluded that hyperlexia should be viewed as part of the normal variation in reading skills, which are themselves associated with individual differences in phonological, orthographic, and semantic processing, short-term memory, and print exposure. A compulsive preoccupation with reading may also be crucial to the development of a hyperlexic reading profile. A theoretical framework, based on recent connectionist models of reading development, is described. This perspective provides a satisfactory account for how individual differences in a number of different skills can lead to a variety of manifestations of reading behavior, including hyperlexia.

Child↗
PubMed2001

Reading both high-coherence and low-coherence texts: effects of text sequence and prior knowledge.

Previous research (e.g., McNamara, Kintsch, Songer, & Kintsch, 1996) has demonstrated that high-knowledge readers learn more from low-coherence than high-coherence texts. This study further examined the assumption that this advantage is due to the use of knowledge to fill in the gaps in the text, resulting in an integration of the text with prior knowledge. Participants read either a high- or low-coherence text twice, or they read both the high- and low-coherence texts in one order or the other. Reading the low-coherence text first should force the reader to use prior knowledge to fill in the conceptual gaps. However, reading the high-coherence text first was predicted to negate the necessity of using prior knowledge to understand the low-coherence text when the latter was presented second. As predicted, high-knowledge readers benefited from the low-coherence only text when it was read first. Low-knowledge readers benefited from the high-coherence text, regardless of whether it was read first, second, or twice.

Cognition↗
PubMed2004

Hidden language impairments in children: parallels between poor reading comprehension and specific language impairment?

This study investigates the oral language skills of 8-year-old children with impaired reading comprehension. Despite fluent and accurate reading and normal nonverbal ability, these children are poor at understanding what they have read. Tasks tapping 3 domains of oral language, namely phonology, semantics, and morphosyntax, were administered, along with measures that reflect an interaction of language domains that we refer to as broader language skills. Relative to control children matched for age and decoding ability, poor comprehenders were impaired across all measures except those tapping phonological skills. In addition to low oral language ability characterizing the group as a whole, some individuals had marked language impairments; it is argued that a substantial minority can be classified as having specific language impairment. However, none of the children had been previously recognized as having a language or reading impairment. These findings demonstrate that serious reading and language impairments are not always obvious in children who have good phonological ability and appear, superficially at least, to read well.

Case-Control Studies↗
PubMed2004

Assessment of phonemic awareness and word reading skills of people with complex communication needs.

A series of phonemic awareness (PA) and single-word reading tasks, which did not require spoken responses, was developed for administration to people with complex communication needs. The aims of the study were to (a) determine the construct validity of the PA tasks and (b) investigate the relationship between PA and single-word reading in adults with complex communication needs. Forty adults with physical and/or intellectual disability were administered these tasks and a standardized measure of receptive spoken vocabulary. In assessing construct validity, data from all participants, including those who used speech, were included in a factor analysis, which indicated that the PA tasks loaded onto a single factor. This factor was interpreted to be PA. The relationship between PA and single-word reading in adults with complex communication needs was determined using correlational and multiple regression analyses of data from 34 of the original participants who did not have functional speech skills. These analyses indicated that receptive spoken vocabulary accounted for a significant amount of variance on most tasks. Additional significant variance in performance on the single-word reading tasks was accounted for by performance on the PA tasks, in particular, Nonword Blending and Phoneme Analysis. These results indicate that the tasks developed provide a valid means of assessing PA and single-word reading skills. In addition, the results indicate that adults with complex communication needs demonstrate the same positive association between PA and reading as has been found in other groups of individuals with and without disability.

Adult↗
PubMed2004

The effects of direct instruction on the single-word reading skills of children who require augmentative and alternative communication.

Current literature suggests a lack of empirically validated strategies for teaching reading skills to children who use augmentative and alternative communication (AAC). The current study implemented a single-subject, multiple-probe-across-subjects design to investigate the effects of direct instruction in single-word reading on the performance of students who use AAC. The instructional program targeted the reading skills of 5 participants who had severe speech impairments and ranged in age from 9 to 14 years old. All 5 participants reached criterion for matching targeted written words to corresponding pictures. Three of the 5 participants demonstrated generalization of reading skills to novel-word reading, and 4 of the 5 generalized reading skills to book contexts. Implications and directions for future research are discussed.

Adolescent↗
PubMed1991

Predicting reading problems in at-risk children.

This study was designed to determine early predictors of reading problems in children at risk for such problems. Three groups of children participated in the study: those with a specific language impairment; those who presumably had a language delay or disorder early in life and had no or a mild disorder at present; and a group of premature children. The data collected were standard speech and language test measures, given as the children entered the study, measures of language meta-processing abilities on an experimental battery, given 6 months after they entered the study; and standard measures of reading, given when the children were aged 80 to 96 months. Many significant relations were found between measures of oral language ability and meta-processing ability at an earlier age and reading ability in first and second grade. The language processing battery scores accounted for a somewhat greater amount of variance on the reading tests than did the scores on the standard language tests. Three ability groups, comparatively high, middle, and low, were found in the population as a result of cluster analysis. Some premature children and some children with early language disorder or mild language disorder at entry into the study, as well as most SLI children, were members of the low language-ability group. These data were then examined to see if membership in the low language-ability group, as measured by either standard speech and language tests or the language meta-processing battery predicted at-risk reading performance on the WRAT. Forty-six children were found to be at risk by this test. Twenty-one of the children were identified by either set of measures, an additional 10 were identified by the language meta-processing measures alone, an additional 3 by the intake measures alone, and 12 of the children were not identified by either set of measures as potential problem readers. The results indicate that early measures of language awareness are good predictors of later reading performance but that different measures of this awareness are good predictors for different children.

Child↗
PubMed1993

Auditory perception, phonological processing, and reading ability/disability.

Auditory perception has been proposed as one source of individual variation in the phonological abilities that play a critical role in skilled reading as well as in reading disabilities. A structural equation approach (LISREL, Jöreskog & Sörbom, 1990) was used to analyze relationships among auditory perception, phonological processing, and reading in a sample of 94 college undergraduates, 24 of whom met specific criteria for a reading disability. In the mathematical model that proved to be the best fit to the data, speech perception was strongly related to three of four phonological variables including short- and long-term auditory memory and phoneme segmentation. These phonological variables in turn were strongly related to reading. Nonverbal temporal processing was not significantly related to any of the phonological variables in the structural equations. It was concluded that speech perception, which was measured with speech repetition, syllable sequence discrimination, and degraded speech tasks, may contribute significantly to individual differences in the phonological abilities necessary for skilled reading.

Adult↗