Perceptual organization,phonological awareness,and reading comprehension in adults with and without learning disabilities

It is not clear from research whether, or to what extent, reading comprehension is impaired in adults who have learning disabilities (LD). The influence of perceptual organization (PO) and phonological awareness (PA) on reading comprehension was investigated. PO and PA are cognitive functions that have been examined in previous research for their roles in nonverbal LD and phonological dyslexia, respectively. Nonverbal tests of PO and non-reading tests of PA were administered to a sample of adults with postsecondary education. Approximately two thirds of the sample had previously been diagnosed as having LD. In a multiple regression analysis, tests of PO and PA were used to predict scores for tests of reading comprehension and mechanics. Despite the nonverbal nature of the perceptual organizational test stimuli, PO strongly predicted reading comprehension. Tests of PA predicted decoding and reading speed. Results were interpreted as supporting the hypothesis that integrative processes usually characterized as nonverbal were nonetheless used by readers with and without disabilities to understand text. The study’s findings have implications for understanding the reading of adults with learning disabilities, and the nature of reading comprehension in general.     

A synthesis of spelling and reading interventions and their effects on the spelling outcomes of students with LD

Previous research studies examining the effects of spelling and reading interventions on the spelling outcomes of students with learning disabilities (LD) are synthesized. An extensive search of the professional literature between 1995 and 2003 yielded a total of 19 intervention studies that provided spelling and reading interventions to students with LD and measured spelling outcomes. Findings revealed that spelling outcomes were consistently improved following spelling interventions that included explicit instruction with multiple practice opportunities and immediate corrective feedback after the word was misspelled. Furthermore, evidence from spelling interventions that employed assistive technology aimed at spelling in written compositions indicated positive effects on spelling outcomes.     

Using predictions to learn about the self-efficacy of early adolescents with and without learning disabilities

This study used conventional self-efficacy measures as well as predictions of performance to examine the spelling and writing efficacy beliefs of early adolescents with and without learning disabilities (LD). In addition, the study examined two types of global efficacy—self-efficacy for self-regulated learning and general self-efficacy. The students with LD over-estimated their spelling performance by 52% and their writing performance by 19%, whereas the non-LD students were generally accurate in their performance estimates. Students’ performance predictions and self-efficacy ratings were strong predictors of a composite writing performance, but the self-efficacy for self-regulated learning and general self-efficacy scores did not predict writing performance. The article concludes with a discussion of recommendations to improve the calibration and academic functioning of adolescents with learning disabilities.     

Occurrence and pattern of impaired reading and written language in children with attention deficit disorders

The purpose of this study was to investigate the occurrence and severity of reading, spelling, and written language impairment in children clinically referred for Attention Deficit Hyperactivity Disorder (ADHD). Specific questions involved 1) whether ADD subgroups with and without hyperactivity differ in reading, spelling, and written language achievement, 2) whether age and gender interact with ADD sub-group class to affect reading/written language achievement, and 3) whether prevalence of impaired reading/written language in these subgroups is consistent with previous reports in heterogeneous samples. Subjects were 115 ADD children aged 6-12 who were subclassified as ADD + H(72 percent) and ADD - H(28 percent) by objective teacher ratings. Dependent measures included tests of single word recognition and vocabulary, word attack, contextual comprehension, written spelling, written sentence construction, and writing fluency, in addition to a structured behavioral observation, during which aspects of inattention and motor activity were coded. A large fraction of this sample met public school LD criteria (54 percent), and achievement on most measures was globally poorer than the respective test normative groups. The ADD + H subgroup showed significantly poorer word attack skills, while the subgroups did not significantly differ from each other on other reading/written language measures. However, 17 percent of the total ADD sample were ≥ 1.5 SD below the mean in total reading achievement, and 29 percent were ≥ 1.5 SD below the mean on measures of written spelling/language. Gender X age interactions, indicating poorer performance in the middle age group of females, were likely related to lower IQ.     

Speech recognition-based and automaticity programs to help students with severe reading and spelling problems

This study was conducted to assess the effectiveness of two programs developed by the Frostig Center Research Department to improve the reading and spelling of students with learning disabilities (LD): a computer Speech Recognition-based Program (SRBP) and a computer and text-based Automaticity Program (AP). Twenty-eight LD students with reading and spelling difficulties (aged 8 to 18) received each program for 17 weeks and were compared with 16 students in a contrast group who did not receive either program. After adjusting for age and IQ, both the SRBP and AP groups showed significant differences over the contrast group in improving word recognition and reading comprehension. Neither program showed significant differences over contrasts in spelling. The SRBP also improved the performance of the target group when compared with the contrast group on phonological elision and nonword reading efficiency tasks. The AP showed significant differences in all process and reading efficiency measures.     

Neuropsychological stability and prognosis of subgroups of children with learning disabilities

A sample of 74 Finnish children with mild learning disabilities (LD) and 57 controls was followed from the third grade (Study 1) to the sixth grade (Study 2). In the initial study, the sample had been grouped into five valid subgroups (Normal, General Language, Visuo-Motor, General Deficiency, Naming) utilizing a cluster analysis. In both studies a battery of 12 neuropsychological, reading, and writing tests was administered, and teacher ratings were obtained. The results indicated that the general neuropsychological profiles of the subgroups were maintained, but some changes, consistent with the progress in reading, were noted. The developmental rate of some neuropsychological functions from Study 1 to Study 2 in the subgroups of children with learning disabilities more closely approached that of the Normal subgroup. At follow-up, 64% of the original LD sample continued to have marked reading and/or writing problems. The Naming subgroup had a more unfavorable prognosis than the other subgroups, especially in reading, and the General Deficiency subgroup in writing (spelling), respectively. Some possibilities for using the results to improve remedial teaching are discussed.     

Reading and spelling difficulties in high school students: Causes and consequences

Basic skills in reading and spelling and supporting metalinguistic abilities were assessed in ninth and tenth grade students in two school settings. Students attending a private high school for the learning disabled comprised one group and the other comprised low to middle range students from a public high school. Both the LD students and the regular high school students displayed deficiencies in spelling and in decoding, a factor in reading difficulty that is commonly supposed to dwindle in importance after the elementary school years. Treating the overlapping groups as a single sample, multiple regression analysis was used to investigate the contribution of nonword decoding skill and phonological and morphological awareness to spelling ability. The analysis revealed that decoding was the major component, predicting about half of the variance in spelling. The effect of phonological awareness was largely hidden by its high correlation with decoding, but was a significant predictor of spelling in its own right. Morphological awareness predicted spelling skill when the words to be spelled were morphologically complex. An additional study showed that differences in decoding and spelling ability were associated with differences in comprehension after controlling for reading experience and vocabulary. Even among experienced readers individual differences in comprehension of text reflect efficiency of phonological processing at the word level.     

Learning Disabilities in Guatemala and Spain: A Cross‐National Study of the Prevalence and Cognitive Processes Associated with Reading and Spelling Disabilities

The main purposes of this research were twofold. We examined the samenesses about learning disabilities (LD) in Guatemala and Spain, two countries with the same language but cultural, political, and educational differences, first analyzing data about the prevalence of reading and spelling disabilities in Guatemala City and the Spanish region of the Canary Islands. The focus of the second study was to determine whether there are cross‐national patterns of significant differences in cognitive processes associated with reading and spelling disabilities from a developmental approach in these two cultural contexts. We found some differences in the prevalence of specific LD in reading between both countries but we did not find significant differences between Guatemalan and Spanish reading‐disabled children in cognitive processes that are involved in reading and spelling acquisition in spite of the cultural and educational differences between the two countries.     

Self-perceptions, motivation, and adjustment in children with learning disabilities: a multiple group comparison study

This study examined the self-perceptions, motivational orientations, and classroom adjustment of children with learning disabilities (LD), matched-IQ non-LD, randomly selected non-LD, and low achieving children. Elementary-age children (N = 148; 37 from each group) completed domain-specific measures of their self-concepts, perceptions of control, and motivation. Teachers rated children on motivational and competence indices and classroom behavioral adjustment. Comparisons among groups indicated that children with LD were lower in perceived cognitive competence and academic self-regulation relative to the nondisabled control groups, but were comparable to the low achieving children. Children with LD were most likely to perceive academic outcomes as controlled by powerful others. No group differences were found for general self-perceptions of control or competence. Teacher ratings of children with LD were more discrepant from those of comparison groups than were self-ratings of children with LD. The results suggest the need for matched-IQ and low achieving control groups in research on children with LD. The origin and role of both environmental inputs and self-perceptions in the adjustment of students with LD are discussed.     

Reading and writing self-efficacy of incarcerated adults

This paper is the first to examine the Reading and Writing Self-Efficacy Scale among incarcerated adults. The aim was to examine whether performance of reading and spelling tests (Reading Speed, Nonsense Words and Spelling) explained individual differences in the participants' efficacy beliefs in reading and writing. Six hundred subjects rated their efficacy beliefs in reading and writing, and 92 of them were also sampled for a reading and spelling test. Factor analysis yielded a two-factor solution dividing the reading items and writing items into separate factors and hierarchical regression analysis revealed that education level and test performance accounted for 36.9% and 34.9% of the statistical variance in reading self-efficacy and writing self-efficacy, respectively. The results suggest that assessment of self-efficacy in reading and writing should be included in a screening procedure of reading and spelling difficulties.     

Teacher Ratings and Peer Nominations of Bullying and Other Behaviour of Children With and Without Learning Difficulties

Teacher ratings were obtained of bullying and other behaviour of 121 children aged 8-12, including 20 children with learning difficulties (LD). Peer nominations were also obtained for 55 of these (15 LD and 40 non-LD). Correlations between teacher ratings and peer nominations were significant for non-LD children but not for children with LD. Teachers and peers scored children with LD higher on victim and shy behaviour and non-LD children higher on leadership and cooperative behaviours. Bullying others was positively related to being disruptive and starting fights by both teachers and peers, and negatively related to being coooperative by teachers. Peers significantly associated being a victim of bullying with shy and help seeking behaviours, while teachers associated victims with fighting, being disruptive and being less cooperative. These differences were related to the children's LD status. Implications for substituting one measure for another when assessing children at risk for adjustment problems, especially children with LD, are discussed.     

Speaking to read: The effects of speech recognition technology on the reading and spelling performance of children with learning disabilities

In recent literature on persons with learning disabilities (LD), speech recognition has been discussed primarily as an assistive technology to help compensate for writing difficulties. However, prior research by the authors has suggested that in addition to helping persons to compensate for poor writing skills, speech recognition also may enhance reading and spelling; that is, what was designed as assistive technology appears to serve remedial functions as well. The present study was conducted to determine whether elementary and secondary students with LD who used the technology to write self-selected compositions and class assignments would demonstrate improvements in reading and spelling. Thirty-nine students with LD (ages 9 to 18) participated. Nineteen participants used speech recognition 50 minutes a week for sixteen weeks, and twenty students in a control group received general computer instruction. Results indicated that the speech recognition group showed significantly more improvement than the control group in word recognition (p<.0001), spelling (p<.002) and reading comprehension (p<.01). Pre- and posttests on five reading-related cognitive processing measures (phonological, orthographic, semantic processing, metacognitive reading strategies, and working memory) indicated that for the experimental group, only phonological processing improved significantly over the treatment period when compared to controls (p<.04). Further ANCOVA suggested that growth in phonological processing was associated with significant differences among conditions for all three academic measures: word recognition, spelling, and reading comprehension. Address correspondence to 971 N. Altadena Drive, Pasadena, CA 91107. E-mail center@frostig.org.     

Language Phenotype for Reading and Writing Disability: A Family Approach

A theory-driven battery of 23 psychometric measures of reading, writing, and related language processes was administered to 102 probands (affected children in Grades 1 to 6 with documented reading problems, writing problems, or both) and both of their biological parents. Affected children and parents were compared on the structural relationships between related language processes (Verbal IQ [VIQ], orthographic, phonological, and rapid naming skills), component reading, (accuracy, rate, comprehension) and writing (handwriting, spelling, composition) skills. The orthographic factor had significant paths to all reading and writing skills, except reading comprehension, in both probands and adults. The phonological factor had significant paths to all reading and writing skills except reading rate and handwriting in probands, but in affected adults only if VIQ was removed. Rapid naming had significant paths only to reading rate in probands and adults. VIQ had significant paths to reading comprehension in probands and adults, and to reading accuracy, reading rate, spelling, and composition in affected adults, but not probands. These results are consistent with the claim of functional systems theory that the same language processes are orchestrated flexibly depending on task at hand. Results for across-age differences in the covariances among related language processes confirmed developmental predictions of connectionist theory. The number of language deficits (based on discrepancy from VIQ) uniquely predicted severity of reading and writing problems in children and spelling problems in adults.     

Learning disabilities and ADHD: overlapping spectrumn disorders

Clinical and psychoeducational data were analyzed for 119 children ages 8 to 16 years who were evaluated in a child diagnostic clinic. A learning disability (LD) was present in 70% of the children with attention-deficit/hyperactivity disorder (ADHD), with a learning disability in written expression two times more common (65%) than a learning disability in reading, math, or spelling. Children with LD and ADHD had more severe learning problems than children who had LD but no ADHD, and the former also had more severe attention problems than children who had ADHD but no LD. Further, children with ADHD but no LD had some degree of learning problem, and children with LD but no ADHD had some degree of attention problem. Results suggest that learning and attention problems are on a continuum, are interrelated, and usually coexist.     

The effect of using laptops on the spelling skills of students with learning disabilities

The current study examined the effect of using laptops on the spelling skills of students with learning disabilities (LD). It was conducted as part of the Israeli “Katom” (A Computer for Every Class, Student, and Teacher) Program. Participants included 93 Hebrew-speaking students with LD aged 13–16, who attend 10 special education classes in a regular middle school. We examined whether the experimental group using laptops showed significant differences in the number of their spelling errors as a result of the intervention on their pre- and post-spelling tests. We also investigated whether there would be differences on the number of spelling errors between the experimental and control groups, as measured by their pre- and post-spelling test results. The findings indicated that the participants in the experimental group significantly improved their spelling skills as opposed to the control group. It seems that the use of laptops in special education classes can enhance the spelling skills of students with LD.     

Students with LD at Postsecondary: Supporting Success and the Role of Student Characteristics and Integration

Students with learning disabilities (LD) are attending postsecondary education more than ever, but are also less likely to complete their education compared to non-LD peers. Using the Inputs–Environment–Outcomes model of Astin, we examined students with LD and non-LD peers during their first year of postsecondary studies. Using structural equation modeling, we found that for all students, perceived academic ability had a positive direct effect on outcomes, whereas drive to achieve had only an indirect effect. Academic integration was important for grade point average and satisfaction. Social integration was important for the acquisition of knowledge and skills and satisfaction, and these connections were stronger for students with LD. Our discussion highlights potential supports for students with LD.     

Cognitive processing rates among disabled and normal reading young adults: A nine year follow-up study

Forty adults who had been diagnosed as reading disabled when they were children and 40 adults from a matched control group of normal readers were tested to assess the diagnostic utility of a newly developed set of tests as well at to ascertain whether or not reading disability persists into early adulthood. The new measures, designed to examine cognitive processing rates in disabled and normal adult readers, included expressive verbal fluency, confrontation naming, and perceptual speed. Evidence for significantly slower cognitive processing rates and persistent problems in reading and spelling was apparent among the young adult disabled readers. Spatial and mathematical ability levels were well within the normal range.     

What lexical decision and naming tell us about reading

The lexical decision (LD) and naming (NAM) tasks are ubiquitous paradigms that employ printed word identification. They are major tools for investigating how factors like morphology, semantic information, lexical neighborhood and others affect identification. Although use of the tasks is widespread, there has been little research into how performance in LD or NAM relates to reading ability, a deficiency that limits the translation of research with these tasks to the understanding of individual differences in reading. The present research was designed to provide a link from LD and NAM to the specific variables that characterize reading ability (e.g., decoding, sight word recognition, fluency, vocabulary, and comprehension) as well as to important reading-related abilities (phonological awareness and rapid naming). We studied 99 adults with a wide range of reading abilities. LD and NAM strongly predicted individual differences in word identification, less strongly predicted vocabulary size and did not predict comprehension. Fluency was predicted but with differences that depended on the way fluency was defined. Finally, although the tasks did not predict individual differences in rapid naming or phonological awareness, the failures nevertheless assisted in understanding the cognitive mechanisms behind these reading-related abilities. The results demonstrate that LD and NAM are important tools for the study of individual differences in reading.     

Language and literacy in nonvocal children with cerebral palsy

Metalinguistic and literacy abilities were studied in twenty-seven nonvocal cerebral palsied school children. The participants of the study were presented four tests of phonological awareness: rhyme recognition, sound identification, phoneme synthesis and word length analysis. Their verbal comprehension was measured using a semantic and a syntactic task. Two tests of nonverbal memory: the visual sequential task from ITPA and Corsi blocks and the Digit Span task from WISC, were also included. These measures were related to their reading and spelling ability. The nonvocal children performed on a lower level on the reading and spelling tasks than did the children of two comparison groups, one matched for mental age and one for mental and chronological age. There were no differences in phonological awareness or in verbal memory. The disabled children performed worse on the verbal comprehension task than the children in the comparison groups. Although the reading and spelling results were low in the nonvocal group there were children showing some literacy skills. A within-group analysis performed in the nonvocal group showed that the reading children performed better on all memory tests, and on the sound identification and the word length analysis tasks than the nonreading ones. They also showed better results on verbal comprehension, the semantic task and used more symbols in their communication. Synthetic speech was more often used in reading and spelling education in the reading subgroup than in the nonreading. Metalinguistic abilities and possibility of acoustic rehearsal are discussed as important factors in reading and spelling acquisition in the nonvocal population.     

Phonological awareness,verbal working memory and the acquisition of literacy

This paper describes a 2-year longitudinal study of 76 initially prereading children. The study examined the relationships between phonological awareness (measured by tests of onset and rime, phonemic segmentation and phoneme deletion), verbal working memory and the development of reading and spelling. Factor analyses showed that the verbal working memory tests which were administered loaded on two distinct but highly related factors, the first of which,simple repetition, involved the repetition of verbal items exactly as spoken by the experimenter, whereas the second,backwards repetition, involved repetition of items in reverse order. Factor analyses also showed that, whist the phonological awareness variables consistently loaded on the backwards repetition factor at the beginning and end of Grade 1, by Grade 2 the phonological awareness variables loaded on a separate factor which also included sentence repetition. Results of multiple regression analyses, with reading and spelling as a compound criterion variable, indicated that phonological awareness consistently predicted later reading and spelling even when both simple and backwards repetition were controlled. In contrast, verbal working memory did not consistently predict reading and spelling across testing times. Whilst there was some indication that verbal working memory, especially backwards repetition, measured during Grade 1 did predict reading and spelling in Grade 2, these effects were no longer evident when all three phonological variables were controlled. Nevertheless, with 4 individual reading and 2 individual spelling measures as the criterion variables, it was shown that phonological awareness was not quite such a consistent predictor of reading and spelling: it was most highly related to reading pseudowords and spelling real words; but it was not so highly related to spelling pseudowords, apparently because the processing demands of the task for the young children in the study were extremely high. Given the importance of verbal working memory for the completion of phonological awareness, reading and spelling tasks, in particular for spelling pseudowords, the findings are interpreted as providing some support for a theoretical position which posits that both phonological awareness and verbal working memory contribute to the early stages of literacy acquisition. Whilst the findings suggest some support for a general underlying phonological ability, there is also evidence that, as children learn to read and write, verbal working memory and phonological awareness become more differentiated.