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Somers, Marie-Andrée; Zhu, Pei; Jacob, Robin; Bloom, Howard – MDRC, 2013
In this paper, we examine the validity and precision of two nonexperimental study designs (NXDs) that can be used in educational evaluation: the comparative interrupted time series (CITS) design and the difference-in-difference (DD) design. In a CITS design, program impacts are evaluated by looking at whether the treatment group deviates from its…
Descriptors: Research Design, Educational Assessment, Time, Intervals
Peisner-Feinberg, Ellen S.; Schaaf, Jennifer M.; Hildebrandt, Lisa M.; Pan, Yi; Warnaar, Bethany L. – FPG Child Development Institute, 2015
The 2013-2014 North Carolina Pre-Kindergarten (NC Pre-K) Evaluation study was designed to examine the longitudinal outcomes through kindergarten for children who attended the Pre-K program, along with comparisons to previous cohorts of program attendees. A sample of 561 children was included in the study, with data gathered at the beginning and…
Descriptors: Kindergarten, Educational Quality, State Surveys, Preschool Children
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Hitchcock, John; Dimino, Joseph; Kurki, Anja; Wilkins, Chuck; Gersten, Russell – National Center for Education Evaluation and Regional Assistance, 2011
Collaborative Strategic Reading (CSR) is a set of instructional strategies designed to improve the reading comprehension of students with diverse abilities (Klingner and Vaughn 1996). Teachers implement CSR at the classroom level using scaffolded instruction to guide students in the independent use of four comprehension strategies; students apply…
Descriptors: Reading Comprehension, Reading Strategies, Educational Strategies, Validity