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Direct linkBenson, Nicholas F.; Beaujean, A. Alexander; Donohue, Ashley; Ward, Emily – Journal of Psychoeducational Assessment, 2018
W scores are used in a number of commercially available tests. Due to their complex nature, it can be hard for applied researchers and practitioners to understand them or even acquire information about them beyond what is provided in technical manuals. In this article, we provide information regarding the background and derivation of W scores that…
Descriptors: Scores, Item Response Theory, Achievement Tests, Cognitive Ability
Download full textStuart, Elizabeth A.; Warkentien, Siri; Jo, Booil – Society for Research on Educational Effectiveness, 2011
The purpose of the current project is to explore the use of propensity scores to estimate the effects of interventions within randomized control trials, accounting for varying levels of implementation or fidelity. This work extends that of Jo and Stuart (2009) to settings with multiple or continuous measures of implementation. Rather than focus…
Descriptors: Probability, Computation, Intervention, Scientific Research
