In this article, we discuss the approach adopted within the Vanderbilt University Learning Disabilities Innovation Hub, which focuses on students with higher-order comorbidity: students with concurrent difficulty with reading comprehension and word-problem solving. The aim of the Hub's Research Project is to test what we refer to as the…

This article describes the Taxonomy of Intervention Intensity, which articulates seven principles for evaluating and building intervention intensity based upon research. The Taxonomy's seven dimensions of intensity are strength, dosage, alignment, attention to transfer, comprehensiveness, behavioral support, and individualization (see Table 1). In…

The purpose of this article is to describe the Taxonomy of Intervention Intensity, which articulates 7 dimensions for evaluating and building intervention intensity. We explain the Taxonomy's dimensions of intensity. In explaining the Taxonomy, we rely on a case study to illustrate how the Taxonomy can systematize the process by which special…

According to national mathematics standards, algebra instruction should begin at kindergarten and continue through elementary school. Most often, teachers address algebra in the elementary grades with problems related to solving equations or understanding functions. With 789 second-grade students, we administered: (1) measures of calculations and…

The purpose of the study was to examine differences in early numerical competencies, as well as subtraction skill, as a function of children's mathematics difficulty (MD) status: computational difficulty (CD), word problem-solving difficulty (PD), concurrent difficulty (CDPD), or neither difficulty (i.e., typically developing; TYP). Based on…

This study examined whether and, if so, how word-problem features differentially affect problem difficulty as a function of mathematics difficulty (MD) status: no MD (n = 109), MD only (n = 109), or MD in combination with reading difficulties (MDRD; n = 109). The problem features were problem type (total, difference, or change) and position of…

This study assessed the effects of curriculum on technical features (criterion validity and developmental growth rates) within curriculum-based measurement in reading with 91 elementary level handicapped and nonhandicapped students. Correlations between oral reading samples and reading comprehension as well as developmental growth rates were…

The purposes of this study were to assess the usefulness of a variety of readability formulas in predicting the relative difficulty of passages, and to explore the contribution of pupils' background to text difficulty. Subjects were 285 special education students in grades 1-9, 117 of whom were based in rural and suburban Minnesota (MN) and 168 of…

This study of 67 intermediate grade students with reading difficulties found that students in a peer-mediated sustained reading condition performed better than peer-mediated repeated reading students and control students receiving typical reading instruction, on fluency but not on comprehension. No effect for the level of text difficulty was…

This manual was developed as part of a project investigating the effectiveness of class-wide peer mediated reading instruction with middle grade students having mild disabilities and reading difficulties. It explains the procedures for introducing, implementing, and monitoring the project's version of repeated reading, in which pairs of students…

This report studied intermediate grade students identified as learning disabled in a resource room setting to examine the effects of adapting repeated reading and sustained reading while manipulating level of text difficulty in a peer-mediated format. Twelve resource room teachers identified 67 students with learning disabilities and reading…