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Tuttle, Christina Clark; Teh, Bing-ru; Nichols-Barrer, Ira; Gill, Brian P.; Gleason, Philip – Mathematica Policy Research, Inc., 2010
In this set of four supplemental tables, the authors compare the baseline test scores of the treatment and matched control group samples observed in each year after KIPP entry (outcome years 1 to 4). As discussed in Chapter III, the authors used an iterative propensity score estimation procedure to calculate each student's probability of entering…
Descriptors: Control Groups, Middle Schools, Student Characteristics, Tables (Data)
Peer reviewed Peer reviewed
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Miles, Sally; Chapman, Robin; Sindberg, Heidi – Journal of Speech, Language, and Hearing Research, 2006
Purpose: The authors describe the procedures used to explain an unexpected finding that adolescents with Down syndrome (DS) had a lower mean length of utterance (MLU) than typically developing (TD) children in interviews without picture support, but not in narratives supported by wordless picture books. They hypothesize that the picture support of…
Descriptors: Language Impairments, Adolescents, Down Syndrome, Comparative Analysis
Yin, Robert K.; Ahonen, Pirkko S. – US Department of Education, 2008
The Voluntary Public School Choice (VPSC) Program supports the emergence and growth of choice initiatives across the country, by assisting states and local school districts in developing innovative strategies to expand public school choice options for students. This report contains the final assessment of the first five years of the VPSC Program…
Descriptors: Public Schools, Transportation, School Choice, Exhibits
Peer reviewed Peer reviewed
Grossman, Jean; Tierney, Joseph P. – Evaluation Review, 1993
Evidence is presented that strengthens the argument against comparison group research strategies. Results from a study of youth attitudes related to the California Conservation Corps involving 528 participants and 668 comparisons indicate that the comparison group may not adequately represent the nontreatment state. (SLD)
Descriptors: Attitudes, Comparative Analysis, Control Groups, Experimental Groups
Granville, Arthur C.; And Others – 1976
This interim report of a pilot year impact study on evaluation methodology is part of a series of documents on the evaluation of Project Developmental Continuity, a Head Start demonstration program aimed at promoting educational and developmental continuity between children's Head Start and primary school experiences. This report deals with…
Descriptors: Attrition (Research Studies), Comparative Analysis, Data Collection, Demonstration Programs
Burghardt, John; McConnell, Sheena; Meckstroth, Alicia; Schochet, Peter; Johnson, Terry; Homrighausen, John – 1999
The National Job Corps Study was conducted in 1994-1996 to provide a thorough and rigorous assessment of the impacts of the Job Corps on key participant outcomes. To ensure that the study was well implemented, a study team from Mathematica Policy Research, Inc., (MPR) investigated outcome and admission (OA) procedures in each Job Corps region and…
Descriptors: Admission Criteria, Career Education, Community Relations, Comparative Analysis