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1.
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2.
Content analyses of journals in the field of LD provide a means of surveying research and publication trends, the knowledge of which may inform policy and practice related to future research agendas. As the first decade of the current millennium was particularly contentious for the field of LD, we felt that a content review would be timely. In this paper, the content of three refereed LD journals—Journal of Learning Disabilities, Learning Disabilities Research & Practice, and Learning Disabilities Quarterly—was analyzed. Articles from 2001–2010 (n = 841) were systematically coded to capture article type, area of interest, population of interest, sample characteristics, and inclusion of students with LD. Results indicate that across the decade, (a) 68% of articles reported empirical research; (b) empirical research trended up; (c) publication of intervention research remained steady; (d) the most common foci were literacy and the non‐academic characteristics of individuals with LD; and (e) inclusion of participants labeled as having a LD declined. We discuss trends, possible explanations, and implications, highlighting areas for future research.  相似文献   

3.
This article reviews research in the four major school psychology journals: Journal of School Psychology, Psychology in the Schools, School Psychology Quarterly, and School Psychology Review. The function of the review was to provide school psychologists with a summary of academic interventions published through years 1995–2005, synthesize the commonalities of empirically based interventions, and report on the extent to which each article provides the reader the opportunity to understand the effects of the intervention with regard to the amount of instructional time required to implement it. Results of the review suggest that reading is most heavily investigated followed by math and, to a much lesser degree, written expression. Moreover, studies use a variety of designs including single subject and group designs. Finally, it is clear that a limited number of studies evaluate the effectiveness of an intervention with regard to the amount of instructional time needed to implement the intervention. In light of these findings and in addition to the two major functions of the review, recommendations for practice and future research are presented. © 2009 Wiley Periodicals, Inc.  相似文献   

4.
Developmental dyslexia is associated with functional abnormalities within reading areas of the brain. For some children diagnosed with dyslexia, phonologically based remediation programs appear to rehabilitate brain function in key reading areas (Shaywitz et al., Biological Psychiatry 55: 101–110, 2004; Simos et al., Neuroscience 58: 1203–1213, 2002). However, a non-trivial number of children diagnosed with dyslexia fail to respond to these interventions (Torgesen, Learning Disabilities Research & Practice 15: 55–64, 2000). A cross-sectional fMRI study investigating post-treatment effects was conducted in an effort to better understand differences in brain function between treatment responders and non-responders. Educational testing and brain activation measured after treatment suggested that the reading intervention used in the present study rehabilitated several basic level reading processes in all participants diagnosed with dyslexia. However, activation in the left inferior parietal lobe differentiated treatment responders and non-responders in comparison to non-impaired readers. Children with persistent deficits in single word decoding (treatment non-responders) demonstrated significantly less activation in the left inferior parietal lobe when compared to non-impaired readers.  相似文献   

5.
Researchers and practitioners in the fields of reading and language are well informed about the importance of phonological awareness in beginning reading. The purpose of this special issue of Learning Disabilities Research & Practice is to present recent research that extends the search for language and reading connections beyond the realm of phonological awareness. Many children with language impairment (LI) identified before formal schooling experience persistent difficulty in learning to read. Two interrelated issues are prerequisite for understanding the developmental course of events that might link language and reading (dis)ability in these children. One is an appreciation of exactly what is meant by LI, while the second concerns how LI should be explained. In this introductory article, we explore the complexities of these two issues, in particular the controversy between the domain‐specific perspective and the domain‐general perspective on the nature of specific LI (SLI). Consistent with these perspectives, future studies on possible language‐reading links will need to measure language and related processes in greater breadth and depth, over time, and within a variety of experiential contexts. The five articles in this issue represent a critical first step in this direction.  相似文献   

6.
We report preliminary behaviour genetic analyses of reading and listening comprehension from The Colorado Learning Disabilities Research Center. Although the twin sample with these new measures is still of limited size, we find substantial, and significant, genetic influences on individual differences in both reading and listening comprehension. In addition, word recognition and listening comprehension each accounted for significant independent genetic influences on reading comprehension. Together, they accounted for all the genetic influence on reading comprehension, indicating a largely genetic basis for the ‘simple model’ of individual differences in reading comprehension proposed by Hoover and Gough (1990) .  相似文献   

7.
Responsiveness-to-intervention (RTI) is a method for both preventing and helping to identify learning disabilities. An important feature is its multi-tier structure: primary intervention (tier 1) refers to classroom instruction; secondary intervention (tier 2) usually involves more intensive pullout, small-group instruction; and tertiary intervention (tier 3) typically denotes most intensive special education. Despite RTI’s popularity and promise, there are many questions about how to implement it effectively and efficiently. So, in 2001, the Office of Special Education Programs in the U.S. Department of Education funded the National Research Center on Learning Disabilities to conduct two large-scale, field-based, longitudinal, and experimental RTI studies. Both studies, one in reading and one in math, were conducted at first grade, with annual follow up for 3 years in the reading study and 2 years in the math study. This article summarizes findings from the reading study, which was designed to answer three basic questions about RTI’s pivotal secondary intervention: Who should participate in it? What instruction should be conducted to decrease the prevalence of reading disabilities? How should responsiveness and non-responsiveness be defined?  相似文献   

8.
Abstract

This paper and the accompanying tool are intended to complement existing supports for conducting power analysis tools by offering a tool based on the framework of Minimum Detectable Effect Sizes (MDES) formulae that can be used in determining sample size requirements and in estimating minimum detectable effect sizes for a range of individual- and group-random assignment design studies and for common quasi-experimental design studies. The paper and accompanying tool cover computation of minimum detectable effect sizes under the following study designs: individual random assignment designs, hierarchical random assignment designs (2-4 levels), block random assignment designs (2-4 levels), regression discontinuity designs (6 types), and short interrupted time-series designs. In each case, the discussion and accompanying tool consider the key factors associated with statistical power and minimum detectable effect sizes, including the level at which treatment occurs and the statistical models (e.g., fixed effect and random effect) used in the analysis. The tool also includes a module that estimates for one and two level random assignment design studies the minimum sample sizes required in order for studies to attain user-defined minimum detectable effect sizes.  相似文献   

9.
Evidence suggests that phonic interventions delivered by trained researchers improve early reading and spelling. This study sought to explore whether school Learning Support Assistants (LSAs) can also improve performance using these methods. Four groups (each of n?=?27) of the poorest reading 6-year-old children in nine schools were screened and selected for this study. LSAs were briefly trained to administer phonic programmes as small group interventions for nine weeks. Rhyme- and phoneme-based programmes were also contrasted with controls receiving the National Literacy Strategy. At post-test, all intervention group children were better decoders, and had better phonological awareness and letter?–?sound knowledge than controls. The phoneme-based group had better letter?–?sound knowledge than the other intervention groups. It is concluded that trained Learning Support Assistants can deliver effective early preventive programmes for literacy difficulties.  相似文献   

10.
Abstract

This study uses a regression discontinuity design to evaluate the impact of seventh-grade interventions delivered by 25 schools on the reading and school engagement outcomes of struggling readers. Students in participating schools were assigned to intervention (n?=?1,495) or comparison (n?=?4,397) conditions, based on their state reading performance and reading fluency scores in sixth grade. On the state reading test, intervention impact favoring the treatment group approached, but did not reach, statistical significance (p?=?.056, g?=?.15). On a measure of reading fluency, there was a significant interaction between the cut points schools chose for condition assignment and intervention impact (p?=?.015). In schools that chose a lower cut point, intervention students outperformed comparison students, while in schools that chose a higher cut point, comparison students outperformed intervention students. On a student self-report measure of school engagement, no significant differences between the intervention and comparison groups were observed (p?=?.83, g?=?.02). Implications for rigorous evaluation of interventions implemented by districts and schools under naturalistic conditions are discussed.  相似文献   

11.
Spelling errors in the Wide Range Achievement Test were analyzed for 77 pairs of children, each of which included one older child with spelling disability (SD) and one spelling-level-matched younger child with normal spelling ability from the Colorado Learning Disabilities Research Center database. Spelling error analysis consisted of a percent graphotactic-accuracy (GA) score based on syllable position and existence in English, and a phonological accuracy score (PA). The SD group scored significantly worse in the PA measure and nonsignificantly better than controls on the GA measure. The Group × Measure interaction was significant. Spelling matched pairs had very similar scores for word recognition and orthographic coding, but the SD group exhibited significant deficits in reading measures of phonological decoding and in language measures of phonological awareness.  相似文献   

12.
ABSTRACT

This study evaluated the association between children’s (N = 301) self-regulation and math and reading achievement in kindergarten, 1st grade, and 2nd grade. Children’s self-regulation was assessed using the Head–Toes–Knees–Shoulders (HTKS) task (involving control of gross body movements) and a computerized continuous performance task (CPT; assessing primarily inhibitory control) in kindergarten, 1st grade, and 2nd grade. Research Findings: Based on cross-lagged structural equation panel models, HTKS task performance positively predicted later math and reading achievement. Math achievement significantly and positively predicted later HTKS and CPT scores. Earlier math and reading achievement moderated the association between CPT scores and later math and reading achievement; inhibitory control–based self-regulation assessed with the CPT predicted higher math or reading achievement in subsequent grades for children with lower math or reading achievement in prior grades. Performance on the CPT moderated the paths from HTKS scores to later reading achievement; behavioral self-regulation assessed with the HTKS task predicted higher reading achievement in subsequent grades for children with low or average CPT performance in prior grades. Practice or Policy: Results from this study have the potential to inform targeted academic interventions focused on enhancing self-regulation in school contexts. The findings highlight the utility of assessing multiple measures of self-regulation.  相似文献   

13.
Abstract This article extends a previous review of the literature ( Maccini & Hughes, 1997 ) on mathematics interventions for secondary school students with learning disabilities (LD). A systematic review of the literature from 1995 to 2006 yielded 23 articles that met the criteria for inclusion. It was determined that a number of practices demonstrated significant gains for secondary school students with LD in math, including mnemonic strategy instruction, graduated instructional approach, cognitive strategy instruction involving planning, schema‐based instruction, and contextualized videodisc instruction. We also discuss the nature and focus of math interventions and implications for both research and practice based on the findings.  相似文献   

14.
Despite encouraging findings that show that interventions can improve students’ math understanding, achievement gaps in math often persist or even widen for students who struggle. Practitioners play a significant role in closing these achievement gaps because they have the responsibility to select or design interventions. Practitioners may wish to consider factors that influence intervention effectiveness. This study evaluated numeracy interventions and explored how features of the studies and interventions may have influenced reported effects. Exploratory analyses revealed smaller effects when only distal measures were considered (g = 0.35; SE = 0.05), or when studies reported including more than 30 percent of participants as English learners (g = 0.44; SE = 0.12). Results also indicated variable effects across the same intervention programs. Implications for practitioners related to selecting interventions are discussed.  相似文献   

15.
Autism Spectrum Disorder (ASD) is a lifelong disability for which prevalence rates continue to increase. Persons with ASD vary widely in both severity of disability and services required. Therefore it is important to identify trends in research and evaluate progress in the field. The current study uses a journal analysis to evaluate research over a 12 year period in three prominent autism focused research journals: Focus on Autism and Other Developmental Disabilities, Autism: The International Journal of Research and Practice, and Journal of Autism and Developmental Disorders. Findings include identification of trends in research designs, sample characteristics, and interventions.  相似文献   

16.
The phonological-core variable-orthographic differences (PCVOD) model [van der Leij, & Morfidi (2006). Journal of Learning Disabilities, 39, 74–90] has been proposed as an explanation for the heterogeneity among dyslexic readers in their profiles of reading-related subskills. The predictions of this model were investigated in a sample of 72 Dutch secondary school students (dyslexics and controls). First, the PCVOD assumption was confirmed that phonological processing and orthographic competence are independent contributors to the prediction of reading fluency and spelling. Among the phonological processing tasks, phonological recoding explained substantial unique variance, but not phonemic awareness or rapid serial naming. Next, the dyslexic readers were divided into two subgroups based on high (ORTH+) and low levels (ORTH−) of orthographic competence. Both subgroups performed below controls on all measures tapping phonological processing, reading and spelling but the ORTH+ group performed as well as non-disabled controls on Dutch and English orthographic choice. As predicted by the model, there were no differences between the subgroups on the tasks that depend on phonological processing, with or without reading. There were differences on Dutch word reading fluency and spelling. Furthermore, the ORTH+ subgroup outperformed ORTH− on tasks demanding speeded word processing such as ‘flashed’ presentation. This finding was independent of lexicality (words or pseudowords), language (Dutch or English) or response mode (lexical decision or typing), but restricted to silent reading. This supports the view that the ORTH+ subgroup is better at identifying larger orthographic units. There was no indication of differences between the subgroups in reading experience. Our data, therefore, support the PCVOD model.
Judith BekebredeEmail:
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17.
Abstract

Evidence-based interventions exist for improving multiple fundamental math competencies, but delivering interventions with fidelity and within a data-driven, tiered framework is a practical challenge faced by most schools. The current study evaluated a math intervention program delivered with community-based resources via AmeriCorps. At the beginning of the school year, students in Grades 4–8 (n?=?550) were randomly assigned to receive math support via the program or to a waitlist control group. Outcomes were measured with a broad-based assessment of math achievement in the winter. Results from intent-to-treat analyses showed a significant and positive effect (d?=?.17) for the program that increased slightly under optimal dosage conditions (d?=?.24). The observed results extend existing literature on math interventions in schools by illustrating the potential for partnerships between community-based organizations and schools to improve outcomes for at-risk students.  相似文献   

18.
This study considers risk associated with family homelessness for school functioning and experimental evidence on the effects of different housing interventions over time. Students in homeless families (N = 172; Mage = 7.31; SD = 4.15) were randomized to housing interventions that focus on acute risks (community-based rapid rehousing), chronic risks (permanent subsidy), or usual care (UC). A matched group of low-income, housed students served as an additional reference for effects on attendance, school mobility, and reading and math achievement across 4 years. Findings partially support the chronic-risk hypothesis that family homelessness interferes with achievement through its relation to deep poverty. Children randomly assigned to UC perform as well or better than children assigned to housing interventions in this municipality.  相似文献   

19.
In this study, we compared methods to improve the decoding and reading fluency of struggling readers. Second‐grade poor readers were randomly assigned to one of the two practice conditions within a repeated reading intervention. Both interventions were in small groups, were 20–28 min long, took place 2–4 days per week, and consisted of phonemic awareness training, letter sound practice, and practice in word families. Students in the accuracy condition (n= 27) practiced each page until they reached 98 percent accuracy while students in the accuracy + automaticity condition (n= 29) practiced until they reached rate (30–90 cwpm) and accuracy criteria. Hierarchical linear modeling revealed no differences between practice conditions in decoding accuracy, reading comprehension, and grade‐level text reading fluency. Significant differences favoring the accuracy + automaticity group were found in measures of decoding automaticity.  相似文献   

20.
An important concern when planning research studies is to obtain maximum precision of an estimate of a treatment effect given a budget constraint. When research designs have a multilevel or hierarchical structure changes in sample size at different levels of the design will impact precision differently. Furthermore, there will typically be differential costs of enrolling additional units at different levels of the hierarchy. The optimal design problem in multilevel research studies involves determining the optimal sample size at each level of the design given specified design parameters and a specified marginal cost of recruitment at each level. The current work extends existing results by considering optimal design for (a) unbalanced random assignment designs and (b) regression discontinuity designs.  相似文献   

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