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Direct linkTipton, Elizabeth; Matlen, Bryan J. – American Journal of Evaluation, 2019
Randomized control trials (RCTs) have long been considered the "gold standard" for evaluating the impacts of interventions. However, in most education RCTs, the sample of schools included is recruited based on convenience, potentially compromising a study's ability to generalize to an intended population. An alternative approach is to…
Descriptors: Randomized Controlled Trials, Recruitment, Educational Research, Generalization
Download full textTipton, Elizabeth; Matlen, Bryan J. – Grantee Submission, 2019
Randomized control trials (RCTs) have long been considered the "gold standard" for evaluating the impacts of interventions. However, in most education RCTs, the sample of schools included is recruited based on convenience, potentially compromising a study's ability to generalize to an intended population. An alternative approach is to…
Descriptors: Randomized Controlled Trials, Recruitment, Educational Research, Generalization
Tipton, Elizabeth; Olsen, Robert B. – Educational Researcher, 2018
School-based evaluations of interventions are increasingly common in education research. Ideally, the results of these evaluations are used to make evidence-based policy decisions for students. However, it is difficult to make generalizations from these evaluations because the types of schools included in the studies are typically not selected…
Descriptors: Intervention, Educational Research, Decision Making, Evidence Based Practice
Tipton, Elizabeth; Yeager, David; Iachan, Ronaldo – Society for Research on Educational Effectiveness, 2016
Questions regarding the generalizability of results from educational experiments have been at the forefront of methods development over the past five years. This work has focused on methods for estimating the effect of an intervention in a well-defined inference population (e.g., Tipton, 2013; O'Muircheartaigh and Hedges, 2014); methods for…
Descriptors: Behavioral Sciences, Behavioral Science Research, Intervention, Educational Experiments
Tipton, Elizabeth; Hallberg, Kelly; Hedges, Larry V.; Chan, Wendy – Society for Research on Educational Effectiveness, 2015
Policy-makers are frequently interested in understanding how effective a particular intervention may be for a specific (and often broad) population. In many fields, particularly education and social welfare, the ideal form of these evaluations is a large-scale randomized experiment. Recent research has highlighted that sites in these large-scale…
Descriptors: Generalization, Program Effectiveness, Sample Size, Computation
Tipton, Elizabeth – Society for Research on Educational Effectiveness, 2013
Recent research on the design of social experiments has highlighted the effects of different design choices on research findings. Since experiments rarely collect their samples using random selection, in order to address these external validity problems and design choices, recent research has focused on two areas. The first area is on methods for…
Descriptors: Experiments, Research Methodology, Middle Schools, Secondary School Mathematics
