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On the Hedges Correction for a "t"-Test
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VanHoudnos, Nathan M.; Greenhouse, Joel B. – Journal of Educational and Behavioral Statistics, 2016
When cluster randomized experiments are analyzed as if units were independent, test statistics for treatment effects can be anticonservative. Hedges proposed a correction for such tests by scaling them to control their Type I error rate. This article generalizes the Hedges correction from a posttest-only experimental design to more common designs…
Descriptors: Statistical Analysis, Randomized Controlled Trials, Error of Measurement, Scaling
Implementing Randomised Control Trials in Open and Distance Learning: A Feasibility Study
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Herodotou, Christothea; Heiser, Sarah; Rienties, Bart – Open Learning, 2017
Randomised control trials (RCTs) are an evidence-based research approach which has not yet been adopted and widely used in open and distance education to inform educational policy and practice. Despite the challenges entailed in their application, RCTs hold the power to robustly evaluate the effects of educational interventions in distance…
Descriptors: Randomized Controlled Trials, Open Education, Distance Education, Feasibility Studies
Investigating the Decision-Making of Response to Intervention (RtI) Teams within the School Setting
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Thur, Scott M. – ProQuest LLC, 2015
The purpose of this study was to measure decision-making influences within RtI teams. The study examined the factors that influence school personnel involved in three areas of RtI: determining which RtI measures and tools teams select and implement (i.e. Measures and Tools), evaluating the data-driven decisions that are made based on the…
Descriptors: Decision Making, Response to Intervention, Teamwork, Data
The Irreproducibility Crisis of Modern Science: Causes, Consequences, and the Road to Reform
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Randall, David; Welser, Christopher – National Association of Scholars, 2018
A reproducibility crisis afflicts a wide range of scientific and social-scientific disciplines, from epidemiology to social psychology. Improper research techniques, lack of accountability, disciplinary and political groupthink, and a scientific culture biased toward producing positive results together have produced a critical state of affairs.…
Descriptors: Scientific Methodology, Replication (Evaluation), Scientific Research, Guidelines
Research in Education: Evidence-Based Inquiry, 7th Edition. MyEducationLab Series
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McMillan, James H.; Schumacher, Sally – Pearson, 2010
This substantially revised text provides a comprehensive, highly accessible, and student friendly introduction to the principles, concepts, and methods currently used in educational research. This text provides a balanced combination of quantitative and qualitative methods and enables students to master skills in reading, understanding,…
Descriptors: Educational Research, Inquiry, Evidence Based Practice, Mixed Methods Research
Statistics and Data Interpretation for Social Work
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Rosenthal, James A. – Springer, 2011
Written by a social worker for social work students, this is a nuts and bolts guide to statistics that presents complex calculations and concepts in clear, easy-to-understand language. It includes numerous examples, data sets, and issues that students will encounter in social work practice. The first section introduces basic concepts and terms to…
Descriptors: Statistics, Data Interpretation, Social Work, Social Science Research