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Hitchcock, John H.; Kurki, Anja; Wilkins, Chuck; Dimino, Joseph; Gersten, Russell – Practical Assessment, Research & Evaluation, 2009
When attempting to determine if an intervention has a causal impact, the "gold standard" of program evaluation is the randomized controlled trial (RCT). In education studies random assignment is rarely feasible at the student level, making RCTs harder to conduct. School-level assignment is more common but this often requires considerable resources…
Descriptors: Intervention, Reading Instruction, Program Effectiveness, Reading Programs
Woodward, John; Gersten, Russell – 1992
This report describes TORUS, a computer-based program for elementary school students with learning disabilities which analyzes student work samples in addition and subtraction and provides individual profiles of student misconceptions and weaknesses. Initially, work samples from 236 middle school students with learning disabilities were analyzed…
Descriptors: Addition, Computer Managed Instruction, Computer Software, Construct Validity