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Peer reviewed
Direct linkMaya B. Mathur – Research Synthesis Methods, 2024
As traditionally conceived, publication bias arises from selection operating on a collection of individually unbiased estimates. A canonical form of such selection across studies (SAS) is the preferential publication of affirmative studies (i.e., those with significant, positive estimates) versus nonaffirmative studies (i.e., those with…
Descriptors: Meta Analysis, Research Reports, Research Methodology, Research Problems
Hooijmans, Carlijn R.; Donders, Rogier; Magnuson, Kristen; Wever, Kimberley E.; Ergün, Mehmet; Rooney, Andrew A.; Walker, Vickie; Langendam, Miranda W. – Research Synthesis Methods, 2022
Since the early 1990s the number of systematic reviews (SR) of animal studies has steadily increased. There is, however, little guidance on when and how to conduct a meta-analysis of human-health-related animal studies. To gain insight about the methods that are currently used we created an overview of the key characteristics of published…
Descriptors: Animals, Health Education, Educational Research, Meta Analysis
Adam B. Wilson; William S. Brooks; Danielle N. Edwards; Jill Deaver; Jessica A. Surd; Obadiah J. Pirlo; William A. Byrd; Edgar R. Meyer; Amy Beresheim; Stephanie L. Cuskey; Jack G. Tsintolas; Eric S. Norrell; Harriet C. Fisher; Christopher W. Skaggs; Dmytro Mysak; Samantha R. Levin; Carlos E. Escutia Rosas; Andrew S. Cale; Md Nazmul Karim; Jenna Pollock; Nicholas J. Kakos; Monica S. O'Brien; Rebecca S. Lufler – Anatomical Sciences Education, 2024
Growth in the online survey market may be increasing response burden and possibly jeopardizing higher response rates. This meta-analysis evaluated survey trends over one decade (2011-2020) to determine: (1) changes in survey publication rates over time, (2) changes in response rates over time, (3) typical response rates within health sciences…
Descriptors: Online Surveys, Response Rates (Questionnaires), Health Sciences, Educational Research
Marks-Anglin, Arielle; Chen, Yong – Research Synthesis Methods, 2020
Publication bias is a well-known threat to the validity of meta-analyses and, more broadly, the reproducibility of scientific findings. When policies and recommendations are predicated on an incomplete evidence base, it undermines the goals of evidence-based decision-making. Great strides have been made in the last 50 years to understand and…
Descriptors: Bias, Publications, Meta Analysis, History
Weissgerber, Sophia C.; Brunmair, Matthias; Rummer, Ralf – Educational Psychology Review, 2021
In the 2018 meta-analysis of "Educational Psychology Review" entitled "Null effects of perceptual disfluency on learning outcomes in a text-based educational context" by Xie, Zhou, and Liu, we identify some errors and inconsistencies in both the methodological approach and the reported results regarding coding and effect sizes.…
Descriptors: Meta Analysis, Research Problems, Research Methodology, Coding
Delaney, Aogán; Tamás, Peter A. – Research Synthesis Methods, 2018
Despite recognition that database search alone is inadequate even within the health sciences, it appears that reviewers in fields that have adopted systematic review are choosing to rely primarily, or only, on database search for information retrieval. This commentary reminds readers of factors that call into question the appropriateness of…
Descriptors: Databases, Online Searching, Information Retrieval, Meta Analysis
IJzendoorn, Marinus H. – New Directions for Child and Adolescent Development, 2019
Randomized controlled trials are a special case of designs using an unbiased instrument to take care of confounders even if they are unmeasured or unknown. Another example of studies using instrumental variables is the Mendelian experiment and Directed Acyclic Graphs show the power of such designs to enhance the internal validity. It is argued…
Descriptors: Research Methodology, Randomized Controlled Trials, Researchers, Participatory Research
Leung, Kim Chau – European Journal of Psychology of Education, 2019
Previous meta-analyses on peer tutoring have mainly included studies using treatment-control/comparison design and excluded studies that adopted pre-test-post-test design. However, some recent meta-analyses on other interventions adopting pre-test-post-test design revealed that certain crucial intervention moderators should be considered when…
Descriptors: Peer Teaching, Teaching Methods, Research Methodology, Program Effectiveness
Curtin, François – Research Synthesis Methods, 2017
Clinical trials have different designs: In late stage drug development, the parallel trial design is the most frequent one; however, the crossover design is not rare; different techniques are used to analyse their results. Although both designs measure the same treatment effect, combining parallel and crossover trials in a meta-analysis is not…
Descriptors: Meta Analysis, Computation, Research Design, Drug Therapy
Wrigley, Terry; McCusker, Sean – Educational Research and Evaluation, 2019
This paper examines the insistent claims by advocates of evidence-based teaching that it is a rigorous scientific approach. The paper questions the view that randomised controlled trials and meta-analyses are the only truly scientific methods in educational research. It suggests these claims are often based on a rhetorical appeal which relies on…
Descriptors: Evidence Based Practice, Educational Research, Research Methodology, Athletics
Manolov, Rumen; Guilera, Georgina; Solanas, Antonio – Remedial and Special Education, 2017
The current text comments on three systematic reviews published in the special section "Issues and Advances in the Systematic Review of Single-Case Research: An Update and Exemplars." The commentary is provided in relation to the need to combine the assessment of the methodological quality of the studies included in systematic reviews,…
Descriptors: Research Design, Meta Analysis, Research Methodology, Functional Behavioral Assessment
Download full textS. Stanley Young; Warren Kindzierski; David Randall – National Association of Scholars, 2021
"Shifting Sands: Unsound Science and Unsafe Regulation" examines how irreproducible science affects select areas of government policy and regulation governed by different federal agencies. This first report on "PM[subscript 2.5] Regulation" focuses on irreproducible research in the field of environmental epidemiology, which…
Descriptors: Public Policy, Federal Regulation, Public Agencies, Epidemiology
Sheng, Zitong; Kong, Wenmo; Cortina, Jose M.; Hou, Shuofei – Research Synthesis Methods, 2016
Researchers have become increasingly interested in conducting analyses on meta-analytic correlation matrices. Methodologists have provided guidance and recommended practices for the application of this technique. The purpose of this article is to review current practices regarding analyzing meta-analytic correlation matrices, to identify the gaps…
Descriptors: Meta Analysis, Correlation, Research Methodology, Best Practices
Barrett, Paula M.; Cooper, Marita; Stallard, Paul; Zeggio, Larissa; Gallegos- Guajardo, Julia – Education and Treatment of Children, 2017
This response aims to critically evaluate the methodology and aims of the meta-analytic review written by Maggin and Johnson (2014). The present authors systematically provide responses for each of the original criticisms and highlight concerns regarding Maggin and Johnson's methodology, while objectively describing the current state of evidence…
Descriptors: Anxiety, Prevention, Program Effectiveness, Program Evaluation
Nye, Elizabeth; Melendez-Torres, G. J.; Bonell, Chris – Review of Education, 2016
Qualitative research is a broad term encompassing many methods. Critiques of the field of qualitative research argue that while individual studies provide rich descriptions and insights, the absence of connections drawn between studies limits their usefulness. In response, qualitative meta-synthesis serves as a design to interpret and synthesise…
Descriptors: Qualitative Research, Meta Analysis, Synthesis, Data Interpretation
