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Download full textYoung, John W.; Holtzman, Steven; Steinberg, Jonathan – Educational Testing Service, 2011
In this research investigation of score comparability for language minority students (English language learners [ELLs] and former English language learners), we examined 3 indicators of score comparability (reliability, internal test structure, and differential item functioning) for 4th and 8th grade students who took the NCLB-mandated content…
Descriptors: Language Minorities, Second Language Learning, Grade 8, Minority Group Students
Martin-Raugh, Michelle P.; Reese, Clyde M.; Tannenbaum, Richard J.; Steinberg, Jonathan H.; Xu, Jun – Educational Testing Service, 2016
The purpose of this study is to explore the validity evidence supporting the high-leverage practices (HLPs) of the ETS® National Observational Teaching Exam (NOTE) assessment series, a kindergarten through 6th grade teacher licensure assessment. HLPs include "tasks and activities that are essential for skillful beginning teachers to…
Descriptors: Beginning Teachers, Elementary School Teachers, Teaching Skills, Educational Practices
Moses, Tim; Miao, Jing; Dorans, Neil – Educational Testing Service, 2010
This study compared the accuracies of four differential item functioning (DIF) estimation methods, where each method makes use of only one of the following: raw data, logistic regression, loglinear models, or kernel smoothing. The major focus was on the estimation strategies' potential for estimating score-level, conditional DIF. A secondary focus…
Descriptors: Test Bias, Statistical Analysis, Computation, Scores
Rijmen, Frank – Educational Testing Service, 2009
Three multidimensional item response theory (IRT) models for testlet-based tests are described. In the bifactor model (Gibbons & Hedeker, 1992), each item measures a general dimension in addition to a testlet-specific dimension. The testlet model (Bradlow, Wainer, & Wang, 1999) is a bifactor model in which the loadings on the specific dimensions…
Descriptors: Item Response Theory, Models, Graphs, Comparative Analysis
Sinharay, Sandip; Holland, Paul W. – Educational Testing Service, 2008
The nonequivalent groups with anchor test (NEAT) design involves missing data that are missing by design. Three popular equating methods that can be used with a NEAT design are the poststratification equating method, the chain equipercentile equating method, and the item-response-theory observed-score-equating method. These three methods each…
Descriptors: Equated Scores, Test Items, Item Response Theory, Data
von Davier, Matthias; Xu, Xueli; Carstensen, Claus H. – Educational Testing Service, 2009
A general diagnostic model was used to specify and compare two multidimensional item-response-theory (MIRT) models for longitudinal data: (a) a model that handles repeated measurements as multiple, correlated variables over time (Andersen, 1985) and (b) a model that assumes one common variable over time and additional orthogonal variables that…
Descriptors: Models, Item Response Theory, Longitudinal Studies, Measurement
Stricker, Lawrence J.; Attali, Yigal – Educational Testing Service, 2010
The principal aims of this study, a conceptual replication of an earlier investigation of the TOEFL[R] computer-based test, or TOEFL CBT, in Buenos Aires, Cairo, and Frankfurt, were to assess test takers' reported acceptance of the TOEFL Internet-based test, or TOEFL iBT[TM], and its associations with possible determinants of this acceptance and…
Descriptors: Computer Attitudes, Questionnaires, Comparative Analysis, Foreign Countries
Raudenbush, Stephen W. – Educational Testing Service, 2004
Under No Child Left Behind legislation, schools are held accountable for making "adequate yearly progress." Presumably, a school progresses when its impact on students improves. Yet questions about impact are causal questions that are rarely framed explicitly in discussions of accountability. One causal question about school impact is of…
Descriptors: Federal Legislation, Test Results, Inferences, Educational Change
