Assessing differences in children with learning disabilities and normally achieving students with a new measure of creativity

This study investigates the creative abilities of children with learning disabilities by employing a new measure designed to assess creativity without the use of verbal or analytic skills. Sixteen normally performing and 16 children with learning disabilities were administered this task and a control task of verbal fluency. The children with learning disabilities scored significantly higher on the nonverbal but not the verbal control task.     

Spelling rule usage among students with learning disabilities and normally achieving students

Spelling performance of students with learning disabilities (LD) was compared with that of same-age normally achieving subjects and younger normally achieving subjects. Subjects with learning disabilities were divided into two groups: poor readers/poor spellers and good readers/poor spellers. A spelling battery was administered that included one task of phoneme-grapheme correspondence rule usage and four tasks of suffix rule usage. The groups with learning disabilities performed significantly below the same-age normally achieving group on all tasks. No significant differences among the two groups with learning disabilities and their achievement-level peers emerged in primary analyses. However, secondary analyses revealed differences in mastery of the past tense spelling rule ed, and in some subskills related to the spelling of words with suffixes. The cognitive-linguistic significance of these results is discussed.     

The development of working memory in normally achieving and subtypes of learning disabled children

Working memory has been proposed as an important component of reading and arithmetic skills. The development of working memory was studied in normally achieving and subtypes of learning disabled children. The performance of reading disabled (RD), arithmetic disabled (ARITHD), and attentional deficit disordered (ADD) children, age 7-13, was compared to normal achievers (NA) on 2 working memory tasks, 1 involving sentences and the other involving counting. There was a significant growth of working memory as a function of age. In addition, the RD children had significantly lower scores on both tasks. The ARITHD children had significantly lower scores only on the Working Memory--Counting task, and the ADD group had scores similar to the normally achieving children except at the youngest age level in the Working Memory--Sentences task. Thus, a reading disability appears to involve a generalized deficit in working memory. Children with an arithmetic disability do not have a generalized language deficit but have a specific working memory deficit in relation to processing numerical information. As children with ADD did not have deficits in these tasks, working memory may not have significant attentional components. An important component of the development of reading and computational arithmetic skills appears to be the growth of working memory for language and numerical information.     

Comprehension of humor in children with nonverbal learning disabilities,reading disabilities,and without learning disabilities

The normal development of humor in children has been well documented with a predictable course that is tied to social, cognitive, and linguistic development in children. This study explored humor comprehension in children with nonverbal learning disabilities (NVLD). Children with NVLD were compared with children with reading disabilities and a comparison group of children with no learning disabilities to assess their comprehension of humor. The humor test was composed of a joke and cartoon section. No group differences in humor comprehension were found when the NVLD group was defined as having visual–spatial and visual reasoning deficits. However, when the NVLD group was divided into children with and without social perceptual difficulties as defined by a direct measure of social comprehension, significant group differences were found in the levels of humor comprehension. These results support the association of humor comprehension with social perception and lend tentative support to the hypothesis that children with NVLD may not be a homogenous group. Future study directions include further exploration into the nature of the association between humor comprehension and social perception as well as closer examination of the heterogeneity of NVLD.     

Metaphoric competence in children with learning disabilities

Metaphoric competence was examined in two groups of children with learning disabilities and one group of nondisabled peers ranging in age from 9-0 to 11-0 years. There were five girls and seven boys in each group. One group of students with learning disabilities had a history of spoken language impairment and the other group did not. Subjects were administered three verbal metaphor tasks (comprehension, preference, and completion) and a visual metaphor task, the Metaphor Triads Task (MTT). The three verbal metaphor tasks were administered in three contexts: (a) sentence, (b) story, and (c) story plus visual (pictorial) support. The group with a history of language impairment consistently performed more poorly on the metaphor tasks than the group without a history of language impairment, who, in turn, performed more poorly than the nondisabled children on all but the MTT. Context variations had no effect on children's performance. Theoretical and clinical implications will be discussed.     

A comparison of students with learning disabilities to low achieving and higher achieving students on three dimensions of social competence

Research continues to accumulate attesting to the fact that many children with learning disabilities are experiencing social difficulties in school. Nonetheless, it is also clear that achievement deficits, with or without the presence of a handicapping condition, are also related to social problems in the classroom. Several studies attempting to clarify the relative roles of handicapping condition and achievement in social adjustment have produced mixed results. The purpose of the present study was to clarify this issue further by examining the social differences between elementary school students with learning disabilities and other low achieving and higher achieving children on three social dimensions: sociometric status, behavior as rated by teachers, and self-ratings of social competence. The results indicated that the children with learning disabilities may be a higher risk socially than their low achieving and higher achieving peers. Variables that may account for these results are discussed as well as directions for future research.     

Sustained and selective attention in children with learning disabilities

Sustained and selective attention of 30 fourth-, fifth-, and sixth-grade students with learning disabilities (LD) and 20 controls were compared. A continuous performance test (CPT) yielded no differences for students with LD and controls, suggesting similar ability for both groups in sustaining attention and inhibiting impulsive responding. Subjects with LD made more errors than controls on a selective attention task when letter distractors were adjacent to the target letter but not when they were distant, and more correct responses than controls when facilitating letters were adjacent to the target, suggesting that students with LD are less able to narrow the focus of their attention. Longer response times by students with LD indicate that they have slower information-processing skills than controls. Regrouping students according to teacher ratings for attention deficit-hyperactivity disorder (ADHD) yielded the customary impulsive response set on the CPT and more errors on the selective attention task, but no differences on response times for students with ADHD. LD students with ADHD made more errors than LD students without ADHD when letter distractors were adjacent to the target letter.     

Numerical competence in young children and in children with mathematics learning disabilities

A longitudinal study was conducted on 82 children to investigate, firstly the numerical competence of young children and the predictive value of (pre)-numerical tests in kindergarten, and, secondly, whether children's knowledge of the numerical system and representation of the number size is related to their computation and logical knowledge and to their counting skills. In an additional cross-sectional study on 30 children with a clinical diagnosis of mathematical learning disability (MLD) of 8,5 years, age- and ability-matched with 2 × 30 children the same parameters of numerical competence were assessed. The longitudinal data showed individual differences in numerosity, as well as the relationship between a delay in arithmetics in grade l and problems on numerosity in kindergarten. In the cross-sectional results some evidence was found for the independence of numerical abilities in MLD-children. About 13% of them had still severe pre-numerical processing deficits (in number sequence production, cardinality skills and logical knowledge) in grade 3. About 67% had severe difficulties in executing calculation procedures and a lack of conceptual knowledge. A feature of 87% of the MLD-children was severe translation deficits, with a significantly worse knowledge of number words compared with the knowledge of Arab numerals. Finally a severe deficit in subitizing was found to be present in 33% of the MLD children. On a group level the processing deficits were linked to understanding numerosity, since the ability-matched younger children and the MLD-children had the same pre-numerical and numerical profile. Implications for the assessment of mathematical disabilities and the value of TEDI-MATH® as an instrument in this process are discussed.     

Fact retrieval deficits in low achieving children and children with mathematical learning disability

Using 4 years of mathematics achievement scores, groups of typically achieving children (n = 101) and low achieving children with mild (LA-mild fact retrieval; n = 97) and severe (LA-severe fact retrieval; n = 18) fact retrieval deficits and mathematically learning disabled children (MLD; n = 15) were identified. Multilevel models contrasted developing retrieval competence from second to fourth grade with developing competence in executing arithmetic procedures, in fluency of processing quantities represented by Arabic numerals and sets of objects, and in representing quantity on a number line. The retrieval deficits of LA-severe fact retrieval children were at least as debilitating as those of the children with MLD and showed less across-grade improvement. The deficits were characterized by the retrieval of counting string associates while attempting to remember addition facts, suggesting poor inhibition of irrelevant information during the retrieval process. This suggests a very specific form of working memory deficit, one that is not captured by many typically used working memory tasks. Moreover, these deficits were not related to procedural competence or performance on the other mathematical tasks, nor were they related to verbal or nonverbal intelligence, reading ability, or speed of processing, nor would they be identifiable with standard untimed mathematics achievement tests.     

Self-perceptions of first- and second-grade children with learning disabilities

The present study addressed the question of the effects of developmental positive bias and repeated experiences of failure on the self-perception of mainstreamed first-and second-grade Israeli children with learning disabilities. The self-perceptions of 44 children with learning disabilities and their 36 nondisabled classmates were assessed. In addition, teachers' evaluations and objective measures of cognitive performance and social acceptance were gathered. The children with learning disabilities were found to have a greater positive bias and lower self-perception in the cognitive competence domain than their normally achieving peers. Self-perceptions of peer acceptance among children with learning disabilities are similar to their normally achieving peers' self-perceptions, in spite of their significantly lower sociometric ratings and teacher evaluations in the social domain. These findings are analyzed in the context of the globality-specificity dimension of self-perceptions at the age level studied. The obtained pattern of self-perceptions is discussed in the light of the interrelationships between cognitive deficit and experimental factors among mainstreamed first- and second-grade children.     

Modeling the response of normally achieving and at-risk first grade children to word reading instruction

The purpose of this study was to identify important subject characteristics that predicted individual differences in responsiveness to word reading instruction in normally achieving and at-risk first grade children. This was accomplished by modeling individual word and nonword reading growth, and the correlates of change in these skills, in first grade students during two different phases of the school year. In the first phase of the study (October–January), word and nonword reading skill was modeled in normally achieving and at-risk children. Results of growth modeling indicated significant group differences in word and nonword reading growth parameters. A combination of phonemic awareness skill, advanced graphophoneme knowledge, and initial word/nonword reading skill predicted word and nonword reading growth in the control group, whereas, a combination of rapid naming speed, letter sound knowledge, and phonemic awareness skill predicted word and nonword reading growth in the at-risk group. In the second phase of the study (January–April), a subgroup of the at-risk subjects who exhibited limited growth in word reading skills during the first phase of the study was enrolled in 12 weeks of small group reading intervention designed to improve reading skills. Results of growth modeling indicated significant increases in word and nonword reading growth rates in this group during the intervention phase. Only rapid naming speed uniquely predicted word and nonword reading growth in the group of subjects receiving intervention.     

WISC-III profiles for children with and without learning disabilities

The degree of WISC-III intersubtest scatter was normal and similar for 66 children with LD and 51 children without LD, but the pattern of scores differed. In the 8- to 16-year-old sample, children with LD scored lower on the Freedom from Distractibility Index relative to FSIQ than children without LD. This difference was found in both the ADHD and nonADHD subgroups, suggesting that children with LD may have an attention deficit even if they do not meet the diagnostic criteria for ADHD. The CAD profile was evident in the mean scores for both the LD/ADHD and LD/nonADHD subgroups, but it was not found among the lowest subtest scores for any of the nonLD subgroups. Though WISC-III profile types were apparent in LD group data, only a minority of individual children with LD actually had these profiles. In the 6- and 7-year-old group, children with and without LD were indistinguishable on the WISC-III, which may reflect the difficulty of ruling out LD at this young age. © 1998 John Wiley & Sons, Inc.     

Reading comprehension instruction: summarization and self-monitoring training for students with learning disabilities.

Forty-five middle-school students with learning disabilities were randomly assigned to one of three reading-comprehension training conditions: (a) summarization training, (b) summarization training with a self-monitoring component, or (c) traditional instruction. All students were interviewed before and after training regarding the strategies they typically employ during reading comprehension; during one training session, "think aloud" protocols were collected. Results indicated that students with learning disabilities trained in summarization procedures performed statistically higher on all dependent measures. In addition, on some transfer measures, students who were trained in the monitoring component statistically outperformed those with only the summarization training.     

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.     

Neuropsychological profiles of children with learning disabilities and children with documented brain damage

This study sought to identify clusters or subtypes of children with learning disabilities (LD) and documented brain damage (BD) on the basis of a comprehensive neuropsychological battery. Sixty subjects, 24 with LD and 36 with BD, participated in the study. The standard scores for several measures from the Intermediate Battery of the Halstead-Reitan Neuropsychological Battery and other select measures were submitted to Q-Technique factor analysis for the entire sample. Five clusters were determined. No one cluster was composed exclusively of LD or BD subjects, with the proportions of LD and BD varying considerably from one cluster to the next. There were some qualitative differences between the clusters, while quantitative differences also figured prominently.     

Frequency of adoption of children and adolescents with learning disabilities

Students from three different facilities who were diagnosed as learning disabled were studied to determine the frequency of adoption with this population as compared to the national norm. The frequency of adoption was found to be 4.5 times higher than the norm, that is, 17.3% versus 3.9%. The possible reasons for this high incidence are discussed.     

Dynamic testing, working memory, and reading comprehension growth in children with reading disabilities

This longitudinal study assessed (a) whether performance changes in working memory (WM) as a function of dynamic testing were related to growth in reading comprehension and (b) whether WM performance among subgroups of children with reading disabilities (RD; children with RD only, children with both reading and arithmetic deficits, and low verbal IQ readers) varied as a function of dynamic testing. A battery of memory and reading measures was administered to 78 children (11.6 years) across three testing waves spaced 1 year apart. WM tasks were presented under initial and dynamic testing conditions (referred to as gain and maintenance testing). The important results were that (a) WM performance as a function of maintenance testing was a significant moderator of growth in reading comprehension and (b) WM performance of children with RD was statistically comparable within subgroups of RD but inferior to that of skilled readers across all testing conditions. The results support the notion that children's WM performance under dynamic testing conditions was related to the rate of growth in reading comprehension but unrelated to subgroup differences in reading.