Purpose: This article provides a comprehensive narrative review of intervention studies for children with speech sound disorders (SSD). Its companion paper (Baker & McLeod, 2011) provides a tutorial and clinical example of how speech-language pathologists (SLPs) can engage in evidence-based practice (EBP) for this clinical population. Method:…

Purpose: The purpose of this investigation was to examine the impact of Chromosome 4p- syndrome on the communication and expressive language phenotype of a large cross-cultural population of children, adolescents, and adults. Method: A large-scale survey study was conducted and a descriptive research design was used to analyze quantitative and…

This article discusses the evaluation of programmatic interventions to enhance postsecondary STEM education for students with disabilities. SciTrain University, a federally funded project to provide instructor training on accessible teaching according to universal design principles, is presented here as a case study on evaluation for similar…

The problem investigated in this research study relates to the referral rate for special education evaluations between students of teachers who were exposed to the professional development and resources associated with the federally funded Reading First program and students of teachers who were not exposed to the program. The purpose of this study…

The paper is designed to lay the foundation for a traditional assessment program in a systematic research effort on the identification of and intervention with at risk and handicapped infants and young children. Initial sections review literature on the qualities of traditional psychometric assessment and on the qualities of a behavioral…

The article describes single subject research designs appropriate for use by special education personnel to determine whether the treatment methods being employed are effective and responsible for behavior change. (DB)

In response to recent trends and legislation, the concept of implementing evidence-based practices has become a critical component of contemporary schooling. It is important that teachers and families of students with disabilities understand the role that qualitative research plays in determining whether a practice is in fact evidence based.…

Considerations for evaluating single subject research in special education include the social validation of treatment goals and effects, the clarity and completeness of treatment descriptions, the generality of treatment results, and component analyses of treatment packages. (Author/CL)

The monograph defines and discusses single subject research designs in special education. Advantages of this approach with measuring change in handicapped children are noted. Observational techniques (event recording, duration recording, interval recording, and time sampling) are described, along with three types of single subject evaluation…

The paper reviews the state of the art in evaluation research of direct instruction projects with handicapped students. The first section delineates research designs used (including norm referenced comparisons, nonequivalent comparison groups, and quasi experimental designs); major findings; and problems with each. A distinction is made between…

This article contrasts the traditional relationships between researchers and subjects in traditional rehabilitation evaluation and research with relationships between researchers and clients-consumers in new methodologies. Collaborative research, characterized by shared power and non-hierarchical authority between client-consumers and researchers…

Describes Q methodology, a technique that can be used to gain important insights on individuals' judgments, attitudes, and points of view on topics or situations that involve early intervention effectiveness issues. Specific steps involved in Q methodology are illustrated in a description of an early intervention efficacy study. (Author/CR)

The article considers the use of multiple baseline and multiple probe designs in special education research. Multiple baseline evaluation designs across behaviors, instructional strategies, situations, and individuals are discussed. Multiple probe design advantages, such as cost effectiveness and short duration, are examined. (PHR)

This article reviews use of the term "best practice" in special education and suggests that the term is misleading unless measurable criteria have been systematically applied. A proposed definition focuses on the theoretical basis for a procedure, integrity of the research design and extent of replication, consensus with literature, process and…

This study compared visual analyses with five alternative methods for assessing the magnitude of effect with single subject designs. Each method was successful in detecting intervention effect. When rank ordered, each method was consistent in identifying the participants with the largest effect. We recommend the use of the standard mean difference…