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A Quotient Effect Size for Educational Interventions
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Foster, Colin – International Journal of Research & Method in Education, 2023
This paper introduces a simple, quotient effect size, termed (for 'quotient'), suitable for reporting on the effectiveness of educational interventions. The quotient effect size for a pre-test-post-test design is defined as the gain score (i.e. post-test minus pre-test) for the intervention group, divided by the gain score for the control group.…
Descriptors: Effect Size, Intervention, Bias, Randomized Controlled Trials
Can Quasi-Experimental Evaluations That Rely on State Longitudinal Data Systems Replicate Experimental Results?
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Fatih Unlu; Douglas Lee Lauen; Sarah Crittenden Fuller; Tiffany Berglund; Elc Estrera – Grantee Submission, 2021
Do quasi-experimental (QE) studies conducted with baseline covariates that are typically available in the longitudinal administrative state databases yield unbiased effect estimates? This paper conducts a within-study comparison (WSC) study that compares experimental impacts of early college high school (ECHS) attendance with QE impacts drawn from…
Descriptors: Quasiexperimental Design, Longitudinal Studies, Databases, Statistical Bias
Can Quasi-Experimental Evaluations That Rely on State Longitudinal Data Systems Replicate Experimental Results?
Peer reviewed Peer reviewed
Direct linkDirect link
Fatih Unlu; Douglas Lee Lauen; Sarah Crittenden Fuller; Tiffany Berglund; Elc Estrera – Journal of Policy Analysis and Management, 2021
Do quasi-experimental (QE) studies conducted with baseline covariates that are typically available in the longitudinal administrative state databases yield unbiased effect estimates? This paper conducts a within-study comparison (WSC) study that compares experimental impacts of early college high school (ECHS) attendance with QE impacts drawn from…
Descriptors: Quasiexperimental Design, Longitudinal Studies, Databases, Statistical Bias