Research of issues related to disability is consistently evolving in several social science related fields such as social work, psychology, sociology, and education. Disability research often employs large public datasets for researchers to conduct secondary analysis. However, these datasets come with many limitations that can impact the overall…

A randomized experiment that measures the impact of a social policy in a sample of the population reveals whether the policy will work on average with universal application. An experiment that includes only the subset of the population that volunteers for the intervention generates narrower "proof-of-concept" evidence of whether the…

The Every Student Succeeds Act (ESSA) of 2015 (Public Law 114-95) requires each state to create a plan for its statewide accountability system. In particular, ESSA calls for state plans that include strategies for reporting education outcomes by grade for all students and for economically disadvantaged students, students from major racial and…

This article is grounded in social constructivist perspectives of learning: its purpose is to provide an overview of the "Interactions Sociales et Acquisition" (ISA) [Social Interactions and Acquisition] French group's research that examines how a peer-assisted learning (PAL) group context facilitates students' acquisition of motor and…

Historically, researchers focused on individuals with severe disabilities have utilized single-subject research methodologies to study the application of the behavioral theory to learning. In contrast, disability studies scholars have primarily used qualitative research methodologies to study quality of life or policy issues related to individuals…

This report was developed in partnership with Ready At Five. It lays out the critical importance of children starting school fully prepared to succeed in kindergarten. Most importantly, the report shares what everyone has learned from the 2010-2011 Maryland Model for School Readiness (MMSR) data about the school readiness of Maryland's children:…

The purpose of this document is to provide guidance for parents, educators, and administrators regarding the determination and implementation of extended school year (ESY) services for eligible students with disabilities. Parents of children with disabilities should be provided information regarding ESY to better enable them to be involved in the…

This article describes conceptual and statistical issues in three approaches to the measurement of change in early intervention programs: change scores, indexes of change, and residual change scores. Advantages and limitations of each approach are reviewed. Problems with the reliability of change scores are highlighted. Criteria for selecting…

This article describes four single-subject research designs comparing two or more interventions with young disabled children--the multitreatment design, alternating treatments design, adapted alternating treatments design, and parallel treatments design. Problems in using these designs include multitreatment interference, nonreversibility of some…

This article describes soft modeling with partial least squares in a nontechnical manner and suggests its greater use in special education research. This approach allows model building and evaluation in situations with high complexity but without well-articulated theories. (DB)

The paper proposes a statistical methodology for synthesizing single-subject research in special education. A regression model that can be used to generate effect sizes for both changes in slope and changes in level occuring as a result of the treatment intervention is outlined. (Author/DB)

This paper provides a brief description of meta-analysis geared toward readers with limited statistics experience beyond an introductory course. The advantages and disadvantages of meta-analysis and its application in early childhood special education research are noted. (JDD)

This paper reviews analytic methods for estimating growth curves or developmental trajectories from longitudinal data. Traditional models for studying change are contrasted with a relatively new method, hierarchical linear models. Evidence is presented indicating that hierarchical linear models can overcome some of the methodological limitations…

This paper summarizes data from several recent surveys of the Department of Education concerning postsecondary students with disabilities. Surveys represented include the 1995-96 National Postsecondary Student Aid Study, Postsecondary Education Quick Information System survey (1998), and the Beginning Postsecondary Students Longitudinal Study.…

This annual report describes the special education students, programs, funding, and special projects for the 2001-2002 school year in North Dakota. During the 2001-2002 school year, 13,997 students, ages 0-21, with disabilities received special education services in the state. Of these, 13,595 were served in public and private schools and 402…