Card and Giuliano conducted a regression discontinuity study in a large Florida school district to investigate the magnitude of academic benefits of the district's gifted program. They found that for children identified as gifted through an intelligence test, the program provided few or no benefits. But children who were admitted to the gifted…

The effective evaluation of correctional programs is critically important. However, research in corrections rarely allows for the randomization of offenders to conditions of the study. This limitation compromises internal validity, and thus, causal conclusions can rarely be drawn. Increasingly, researchers are employing propensity score matching…

In this commentary of "Evaluating the Gifted Program of an Urban School District Using a Modified Regression Discontinuity Design" by Davis, Engberg, Epple, Sieg, and Zimmer, we examine the background of the study, critique the methods used, and discuss the results and implications. The study used a fuzzy regression discontinuity design…

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…

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…

For the 2014 study, "A Randomized Trial Examining the Effects of Aerobic Physical Activity on Attention-Deficit/Hyperactivity Disorder Symptoms in Young Children", researchers examined the effect of a daily before-school physical activity program on behavioral outcomes of students in grades K-2. The study sample included 202 students who…

Shortly after we published "Addressing Flawed Research in Developmental Education" (2012) in the "Journal of Developmental Education," Thomas Bailey, Shanna Smith Jaggars, and Judith Scott- Clayton from the Community College Research Center (CCRC) wrote a response rebutting several of our claims. Though their response corrects…

The National Council on Teacher Quality's (NCTQ) recent review of university-based teacher preparation programs concluded the vast majority of such programs were inadequately preparing the nation's teachers. The study, however, has a number of serious flaws that include narrow focus on inputs, lack of a strong research base, missing standards,…

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…

HIV/AIDS is one of the most important public health challenges facing Nigeria today. Recent evidence has revealed that the adolescent population make up a large proportion of the 3.7% reported prevalence rate among Nigerians aged 15-49 years. School-based sexual health education has therefore become an important tool towards fighting this problem.…

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 experimental studies, researchers are often interested in secondary research questions that explore important aspects of main findings, such as whether or not program effects vary according to the level of fidelity in which the program has been implemented; or according to the dosage received by individuals participated in the program. In this…

As a result of the 1998 reauthorization of Head Start, the Department of Health and Human Services conducted a national evaluation of the Head Start program. The goal of Head Start is to improve the school readiness skills of low-income children in the United States. There is a substantial body of experimental and correlational research that has…

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…