This article provides an overview of my experiences in special education as a teacher and subsequently as an intervention researcher providing background on where we were in providing instruction to individuals with disabilities 40 years ago (prior to legal protections and supports) compared with the present. This article acknowledges the progress…

The related constructs of opportunity to learn (OTL) and achievement growth are fundamental aspects of the current large-scale assessment and accountability system in operation in the United States. For purposes of this article, OTL is defined as the degree to which a teacher dedicates instructional time and content coverage to the intended…

Valid, scientific research is critical for ascertaining the effects of instructional techniques on learners with disabilities and for guiding effective special education practice and policy. Researchers in fields such as psychology and medicine have identified serious and widespread shortcomings in their research literatures related to replication…

Computer-assisted instruction (CAI) for students with disabilities can be categorized into the following categories: visual, auditory, mobile, and cognitive skills-based CAI. Cognitive-skills based CAI differs from other types of CAI largely in terms of an emphasis on instructional design features. We conducted both systematic review of…

This study examines the longer term effectiveness of a standard protocol, Tier 2 supplemental vocabulary intervention for kindergarten English learners, designed to develop root word vocabulary knowledge and reinforce beginning word reading skills. Participating students in the original study ("n" = 93 treatment, 92 control) received 20 weeks of…

This study investigated the efficacy of a writing (ANSWER) strategy to improve the essay test responses of students who were enrolled in a campus-based, postsecondary education program for individuals with developmental disabilities. Random assignment to treatment or control groups and a pre- and posttest design were employed. Students used the…

The purpose of this review of the research on writing instruction with deaf students was to determine which findings offer evidence for effective practice. The authors used a framework of critical elements developed from research on hearing writers as a set of findings to which they compared the findings with deaf writers. They identified 16…

We examined the effects of the Concrete-Representational-Abstract Integration strategy on the ability of secondary students with learning disabilities to multiply linear algebraic expressions embedded within contextualized area problems. A multiple-probe design across three participants was used. Results indicated that the integration of the…

This multiple-probe study examined the effects of self-regulation on the acquisition of science vocabulary by four third-grade English language learners (ELLs) with learning difficulties. The students were provided only direct vocabulary instruction in a baseline phase, followed by intervention and maintenance phases into which self-regulation…

Students with disabilities often have large vocabulary deficits that continue to increase over time if effective interventions that supplement daily academic instruction are not put in place. The current study used a simultaneous treatments design to analyze the comparative effects of whole-word vocabulary instruction and morphograph instruction…

This study evaluated the effectiveness of a multicomponent early literacy curriculum that included phonics and phonemic awareness in comparison to a sight word approach. A total of 93 students with severe developmental disabilities who were enrolled in Grades K through 4 were randomly assigned to either a multicomponent early literacy curriculum…

Meta-analysis is considered an acceptable method to evaluate research studies for evidence-based practices. The purpose of this review is to examine the applicability of using meta-analyses in the learning disability field to guide classroom practice. The authors evaluated 15 learning disability meta-analyses in three domains: large-scale…

This study examined the effects of instructional intensity on the acquisition of storybook vocabulary in first graders who were at risk of early reading failure. It also measured whether the intervention was effective for closing the vocabulary knowledge gap between students who were at risk and their average-achieving peers. A total of 66…

One of the most fundamental math skills for students to learn is basic computational skills. Students who have difficulty learning math skills may benefit from representational approaches, such as TouchMath. A multiprobe, multiple baseline, across-participants design was used in this study to investigate the use of TouchMath with students with…

Social validity refers to participants' perceptions regarding the goals, procedures, and effects of a practice. The collection and report of social validity data can serve an important role in understanding, and possibly remedying, obstacles affecting the successful adoption of empirically based practices by the field. Studies published between…