Strain provides his perspective on four issues facing science and practice in early childhood and special education. He points to the need for (a) long-term functional research, (b) greater emphasis on the use of evidence-based programs in practice, (c) moving special education research back to the Office of Special Education Programs, and (d)…

Each of the five articles in this special issue gets "into the weeds" in terms of studying actual classroom or school implementation of evidence-based or promising practices. Virtually all confront the issue of logistics and establishing an infrastructure for ensuring adequate implementation. In general, those studies that ask teachers…

The report of the national response to intervention (RTI) evaluation study, conducted during 2011-2012, was released in November 2015. Anyone who has read the lengthy report can attest to its complexity and the design used in the study. Both these factors can influence the interpretation of the results from this evaluation. In this commentary, we…

"Better Evidence, Better Choices, Better Schools," a recent report from the Center for American Progress and the Knowledge Alliance, focuses on the evidence-based research provisions in the Every Student Succeeds Act (ESSA). ESSA provisions ask districts and schools to consider various sources of evidence, make judgments about the…

This is a response to the document by Hughes et al. in this issue that offers a critique of the status of differential response (DR). We find the document to be helpful in intent, but do not find that it reflects scientifically sound methods, and contains many mischaracterizations of the status, impetus, research, and evaluation of DR to date. We…

This article is an invited commentary and analysis of the authors' completed systematic evaluation of Child Protective Services (CPS) differential response (DR) models. I write this commentary based on 25 years of public child welfare experience followed by 13 years as a social work professor and researcher. In their review of DR, the…

This reaction article highlights areas of agreement and disagreement with the study conducted by Hughes, Rycus, Saunders-Adams, Hughes, and Hughes on the current state of research and practice in differential response (DR). Overall, we agree with several of the arguments put forth by Hughes et al. regarding the limitations of DR research and the…

In this article, the authors responded to nine commentaries by 17 contributors to their article, "Issues in Differential Response." The authors found that a majority of the respondents agreed with the major conclusions of "Issues in Differential Response." However, there were varying degrees of disagreement regarding the…

A well-constructed, step-by-step protocol is a critical starting point for teaching undergraduates new techniques, an important record of a lab's standard procedures, and a useful mechanism for sharing techniques between labs. Many research labs use websites to archive and share their protocols for these purposes. Here we describe our experiences…

Investigated is the topic of research implementation and how it can affect evaluation results. Even when evaluations are well planned, the obtained results can be misleading if the conscientiously-constructed research plan is not correctly implemented in practice. In virtually every research arena, one finds major difficulties in implementing the…

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…

External and implementation factors and their potential threats to field test validity and the practical realities of the field testing process on results are discussed. External factors include site selection, negotiations, contracts, site monitoring, training, and type of product. Implementation factors include motivation, dependence on local…

This paper provides a rationale for studies of educational program implementation and offers a causal model for program evaluation emphasizing pupil-related variables that intervene between program implementation and outcome variables. The rationale is followed by a discussion of implementation as an evaluation construct. Process, independent…

Although important, traditional basic-to-applied research methods have provided an insufficient basis for advancing the design and implementation of innovative collaborative learning environments. It is proposed that more progress may be accomplished through development research or design research. Development research protocols require intensive…

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…