Background: The Education Endowment Foundation (EEF) is an independent charity that was established in 2011 with the explicit aim of breaking the link between family income and educational achievement in England. Over the seven years since its inception, EEF has contributed to the existing evidence base by funding over one hundred randomised…

This paper reviews literature on the rationale, challenges, and recommendations for choosing a nonequivalent comparison (NEC) group design when evaluating intervention effects. After reviewing frequently addressed threats to validity, the paper describes recommendations for strengthening the research design and how the recommendations were…

Intervention research is vital for social work, as it aims to develop practice/program approaches and provide evidence to understand which interventions are effective and for whom. Despite growing attention, little social work research exists that evaluates interventions. Among the reasons for the dearth of intervention research within social work…

This "What Works Clearinghouse Procedures and Standards Handbook (Version 3.0)" provides a detailed description of the standards and procedures of the What Works Clearinghouse (WWC). The remaining chapters of this Handbook are organized to take the reader through the basic steps that the WWC uses to develop a review protocol, identify…

The What Works Clearinghouse (WWC) provides online reports to the public about the scientific evidence for educational interventions. The quality of these reports is important because they effectively tell the non-scientific community which programmes do and do not work. The aim of this brief review is to assess WWC's report on a clinically…

The present review examines research on the effects of technology use on reading achievement in K-12 classrooms. Unlike previous reviews, this review applies consistent inclusion standards to focus on studies that met high methodological standards. In addition, methodological and substantive features of the studies are investigated to examine the…

Treatment integrity (also referred to as "treatment fidelity," "intervention integrity," and "procedural reliability") is an important methodological concerning both research and practice because treatment integrity data are essential to making valid conclusions regarding treatment outcomes. Despite its relationship to validity, treatment…

This special series focused on treatment integrity in the child mental health and education field is timely. The articles do a laudable job of reviewing (a) the current status of treatment integrity research and measurement, (b) existing conceptual models of treatment integrity, and (c) the limitations of prior research. Overall, this thoughtful…

This article discusses the difficulties in conducting intervention research or evaluating intervention programs in a school setting. In particular, the problems associated with randomization and obtaining control groups are examined. The use of quasi-experimental designs, specifically a paired comparison design using the individual as his or her…

An evaluation of 14 independent experiments in early intervention, conducted in the late 1950s and early 1960s, revealed program characteristics related to positive outcome: the early age at intervention; the higher adult-child ratio; and more home visits, direct participation of parents, and services for families. (Author/MLF)

There is general agreement that human services (i.e., services that depend on direct interpersonal contact between a deliverer and a client) are difficult to evaluate. The author points out some sources of this difficulty and proposes a strategy for the evaluation of human services delivery. (Author/GDC)

Documenting treatment integrity is an important issue in research and practice in any discipline concerned with prevention and intervention. However, consensus concerning the dimensions of treatment integrity and how they should be measured has yet to emerge. Advances from three areas in which significant treatment integrity work has taken…

The concept of treatment integrity cuts across a diversity of fields involved with providing treatments or interventions to individuals. In medical treatments, the concept of "treatment compliance" or "treatment adherence" is an important and problematic issue. In the field of nutrition, the concept of "dietary adherence" is important for…

This paper discussed Consortium for Longitudinal Studies findings which demonstrate that, contrary to first impressions from earlier evaluation studies, early intervention preschool programs do have generally positive long term effects. A public information campaign to communicate these findings through all media is advocated. Problems of…