Author of this structured abstract:
Kyrie Dragoo, NICHCY
NICHCY Structured Abstract 82 describes the following research synthesis:
Reading Comprehension Instruction for Students with Learning Disabilities, 1995–2006: A Meta-Analysis
Berkeley, S., Scruggs, T.E., & Mastropieri, M.A
Remedial & Special Education, 31(6), 423-436
This meta-analysis of research conducted between 1995 and 2006 synthesizes findings of 40 studies for improving the reading comprehension of students with learning disabilities. Nearly 2,000 students participated in the interventions, which were classified as fundamental reading instruction, text enhancements, and questioning/strategy instruction (including those that incorporated peer-mediated instruction and self-regulation).
Mean weighted effect sizes were calculated for criterion-referenced measures (0.69 for treatment effects, 0.69 for maintenance effects, and 0.75 for generalization effects) and for norm-referenced tests (0.52 for treatment effects). These outcomes were somewhat lower than, but generally consistent with, the results of previous meta-analyses, which showed that reading comprehension interventions are generally very effective. Higher outcomes were noted for interventions that were implemented by researchers than those implemented by teachers. Implications for practice and further research are discussed.
Reading requires both the ability to decode text and the ability to understand and extract meaning from text. Reading comprehension is the ability to obtain meaning from text. This meta-analysis examined the effectiveness of the reading comprehension strategies most commonly used to teach students with learning disabilities (LD). The researchers divided the reading comprehension interventions they examined into the following categories:
Questioning/Strategy Instruction. Questioning/strategy instruction interventions focused on teaching students reading comprehension strategies, directly questioning students while reading, or teaching students to self-question while reading. Interventions in this category included teacher-directed questioning (which encompasses both directly questioning students and training students to ask themselves or their peers questions while they read), reading comprehension strategy instruction (e.g., activating prior knowledge, making predictions, summarizing, identifying main ideas, clarifying, questioning, and analyzing text structure), and peer tutoring (e.g., peer-assisted learning strategies, Collaborative Strategic Reading (CSR), the Text Content and Structure Program, reciprocal teaching, and class-wide peer tutoring).
Text Enhancements. The primary purpose of text enhancement interventions is to increase reading comprehension by supplementing or enhancing the text. Text enhancement interventions included in-text question placement, graphic organizers, and technology (e.g., hypermedia and video vocabulary instruction for text enhancement).
Fundamental Reading Skills Training. Fundamental reading skills interventions provided training in basic skills (e.g., phonological awareness and/or phonics skills) to increase reading comprehension. This category contained packaged intervention programs designed to teach basic reading skills (e.g., the Behavioral Reading Therapy Program, the Failure Free Reading Program, the Auditory Discrimination in Depth Program, Embedded Phonics, and the Dyslexia Training Program). All the fundamental reading skills programs maintained very low student-to-teacher ratios during implementation.
Other. The two interventions in this category were a school-wide cooperative learning program and an evaluation of a program with multiple components.
- Does reading comprehension instructional research conducted since the earlier meta-analysis by Mastropieri, Scruggs, Bakken, and Whedon (1996) result in comparable effect sizes?
- Will other differences be observed between recent research and previous research, for example, differences in types of treatments examined?
- Number of Studies Included | 40
- Number of Subjects | 1,734
- Years Spanned | 1995-2006
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Students in kindergarten through 12th grade with learning disabilities (LD)
Age/Grade of Subjects
Of the 40 studies, 15 studies involved elementary school students, 18 involved middle school students, 6 included high school students, and 1 examined students in a residential facility for adjudicated youth. The mean age of participants in these studies was 12 years old (150.5 months).
All of the studies included in this meta-analysis focused on students classified as having a learning disability (LD). In addition, 8 studies included small groups of children with other classifications (e.g., ADHD, or remedial reading).
Several interventions designed to improve student reading comprehension and containing specific reading comprehension outcomes were examined. In order of their prevalence in the 40 studies, the interventions were categorized as:
- questioning/strategy instruction (67.5%)
- text enhancements (15.0%)
- fundamental reading skills training (12.5%)
- “other” (5.0%).
Duration of Intervention
Intervention sessions ranged in number between 1 and 155 with a mean of 29.8 sessions. Their length ranged between 20 and 140 minutes, with a mean of 49.7 minutes.
Effect size is a statistical calculation that is often represented as ES or d. In this study, effect size measures the impact of reading comprehension interventions. Three main types of effects were examined in this meta-analysis:
- treatment (how effective a particular reading strategy or intervention was in improving the immediate reading comprehension of students);
- maintenance (how well students were able to continue using the reading strategy or intervention after the study had ended); and
- generalization (how effectively students were able to apply the reading strategy or intervention in other subject areas or to other types of text).
An effect size of less than d=0.20 suggests that a treatment did not have a significant effect on the sample population. Larger effect sizes indicate that the treatment has had some impact. For example:
d=0.20 indicates a small or low impact
d=0.50 indicates a moderate impact
d=0.80 or above indicates a large impact
In this meta-analysis, the overall weighted mean effect size across all types of effects (i.e., treatment, maintenance, and generalization effects) was 0.70 (indicating a significant impact) for reading comprehension studies that used criterion-referenced tests. When this overall effect size was subdivided, it showed weighted mean effect sizes of 0.69 for treatment effects, 0.69 for maintenance effects, and 0.75 for generalization effects. The overall mean effect size, for both criterion-referenced and norm-referenced measures across treatment, maintenance, and generalization outcomes, was 0.65.
The mean weighted effect sizes for reading comprehension instruction research were found to be statistically significant; however, they were lower than the effect sizes found in the 1996 meta-analysis conducted by Mastropieri et al. The researchers suggest several reasons why the effect sizes of reading comprehension studies conducted since the mid-1990s were more moderate than the effect sizes of earlier studies. For example, the authors note that studies of interventions delivered by researchers tend to result in higher effect sizes than those delivered by teachers, possibly due to researchers’ greater familiarity and comfort with the interventions they study than the teachers they train to implement those interventions. In the 1996 meta-analysis, a greater proportion of the studies examined were researcher-led interventions, which may have contributed to higher effect sizes.
Questioning/Strategy Instruction. The use of questioning or strategy instruction for teaching students with LD reading comprehension skills has been studied more extensively than any other reading comprehension strategy (n=27, or 67.5% of the studies), and has shown moderate to high effectiveness across studies. Five studies on questioning/strategy instruction reported very high effect sizes (ES > 2). All of the interventions shown to be highly effective involved teaching students to ask and answer questions about the text’s main idea. In addition, 4 out of the 5 highly effective interventions included a self-monitoring component, and 2 studies with very high effect sizes included a strategy called “attribution retraining,” where students learn to associate progress in their reading skills with their effort and strategy use.
Text Enhancements. In-text question placement, graphic organizers, and technology were used to teach students reading comprehension in eight of the studies reviewed. Text enhancements were found to be effective in helping students with LD learn reading comprehension strategies.
Fundamental Reading Skills Training. Overall, instructing students in basic reading skills using packaged interventions with low student to teacher ratios was an effective method of increasing reading comprehension.
Other Interventions. The two studies on programs that did not fit into the other categories of studies yielded small effect sizes.
This meta-analysis confirms previous findings that, overall, reading comprehension interventions for students with LD have a greater positive impact on student skill development than traditional instruction alone. Although the effect sizes were lower than those found in previous meta-analyses, reading comprehension interventions involving questioning/strategy instruction, training in fundamental reading skills, and text enhancements nonetheless ranged from moderate to high.
The authors note a common thread between the wide-range of interventions included in this meta-analysis: a focus on teaching students to attend more carefully and think more systematically while they read. Since previous research has found most students with LD fail to use these strategies on their own, the implication of this meta-analysis is that systematically teaching reading comprehension using any of these interventions is likely to significantly improve students’ ability to derive meaning from text.
Looking for more information from the reading research? We’re pleased to point you to these additional resources, all available in the research section of our website.
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Graphic Organizers and Their Effects on the Reading Comprehension of Students with LD: A Synthesis of Research
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The title of this meta-analysis fully captures the focus of this meta-analysis.
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This structured abstract summarizes a meta-analysis comparing the effects of whole language/language experience approaches with the effects of basal reading approaches to early literacy instruction.