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Asparouhov, Tihomir; Muthen, Bengt – Structural Equation Modeling: A Multidisciplinary Journal, 2009
Exploratory factor analysis (EFA) is a frequently used multivariate analysis technique in statistics. Jennrich and Sampson (1966) solved a significant EFA factor loading matrix rotation problem by deriving the direct Quartimin rotation. Jennrich was also the first to develop standard errors for rotated solutions, although these have still not made…
Descriptors: Structural Equation Models, Testing, Factor Analysis, Research Methodology
Žoldošová, Kristína; Matejovicová, Iveta – International Electronic Journal of Elementary Education, 2010
The article is aimed at a partial problem of science process skills development--the evaluation of educational outcomes. In comparison to evaluation of obtained knowledge, the skills development is not so easy to be objectively evaluated. The article provides a proposal of an evaluation tool and describes the first results of its research…
Descriptors: Elementary School Students, Science Process Skills, Science Instruction, Elementary School Science
Ketterlin-Geller, Leanne R.; Yovanoff, Paul; Tindal, Gerald – Exceptional Children, 2007
Accommodations influence the measurement of student proficiency. However, with discrepant research findings, it is difficult to evaluate the effects of these practices on the measurement of performance of students with special needs. In this article, we present results from an experimental study investigating the effects of item characteristics…
Descriptors: Student Characteristics, Special Needs Students, Mathematics Tests, Testing Accommodations

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