Meta-analysis is a widely used methodology to combine evidence from different sources examining a common research phenomenon, to obtain a quantitative summary of the studied phenomenon. In the medical field, multiple studies investigate the effectiveness of new treatments and meta-analysis is largely performed to generate the summary (average)…

The historical turn in social science has prompted scholars to engage with the work of historians on a large scale. Here, social scientists face two standard problems of selection bias: confirmation bias and convenience sampling. So far, the record of dealing with these problems has been poor, and little has been done to specify how social…

The puzzle of how to connect research with policy and practice is a vital area for scientific inquiry. The William T. Grant Foundation believes that attempts to improve the use of research evidence in policy and practice should be subject to rigorous theory building and empirical analysis. The stakes are high for the research community: If we do…

In systematic reviews, meta-analyses are routinely applied to summarize the results of the relevant studies for a specific research question. If one can assume that in all studies the same true effect is estimated, the application of a meta-analysis with common effect (commonly referred to as fixed-effect meta-analysis) is adequate. If…

The debate on the validity of teaching students how to identify their own preferred learning style is not going to go away anytime soon as evidenced by the number of articles still being written about the topic. One can find numerous research studies that say students have different strengths and weaknesses when it comes to learning and retaining…

On October 14, 2016, the National Center for Special Education Research (NCSER) and the National Center for Education Research (NCER) in the Institute of Education Sciences (IES) convened a group of experts to gain insights and advice on how best to support the advancement of evidence beyond an efficacy study. Discussion followed five topics of…

The author has been asked to respond to Lodge, Hansen, and Cottrell's recent (2015) paper in this journal and they have done a very thorough and scholarly job of dissecting the weaknesses of modality preference theories. They clearly and carefully analyse the nature of the evidence for modality preference and conclude that there is little if any…

Speech-language pathologists are faced with demands for evidence to support practice. Federal legislation requires high-quality evidence for decisions regarding school-based services as part of evidence-based practice. The purpose of this article is to discuss the limited scientific evidence for making appropriate decisions about speech-language…

A meta-analysis by Tran, Sanchez, Arellano, and Swanson (2011) of the published RTI literature found that the magnitude of effect size (ES) between responders and low responders at posttest was significantly moderated by the pretest ES and the type of dependent measure administered, whereas no significant moderating effects were found in the mixed…

Historically, qualitative and quantitative approaches have been applied relatively separately in synthesizing qualitative and quantitative evidence, respectively, in several research domains. However, mixed methods approaches are becoming increasingly popular nowadays, and practices of combining qualitative and quantitative research components at…

In a climate of fiscal constraint and cuts to public spending, it is more important than ever to demonstrate the effectiveness of learning programmes. The author carried out an action research project within Norfolk County Council's adult community learning service, where she works as a tutor, with the aim of increasing the impact of reminiscence…

This paper describes the analysis of the National Science Foundation (NSF) Math and Science Partnership (MSP) program's January 2008 Learning Network Conference (LNC). This study focuses on the methodologies used by the MSP community to generate evidence and seeks to understand topics of interest to the 320 LNC participants. The data set for this…

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…

Professional practice is built on sound knowledge specific to each discipline. This knowledge is developed and validated through a process of scientific investigation or research. However, lack of knowledge about the research process acts as a barrier to applying evidence-based practice within the school setting. Understanding the components that…