Results 231 to 240 of about 220,280 (253)
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1997
The extension of item response theory to data from more than one group of persons offers a unified approach to such problems as differential item functioning, item parameter drift, nonequivalent groups equating, vertical equating, two-stage testing, and matrix-sampled educational assessment.
R. Darrell Bock, Michele F. Zimowski
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The extension of item response theory to data from more than one group of persons offers a unified approach to such problems as differential item functioning, item parameter drift, nonequivalent groups equating, vertical equating, two-stage testing, and matrix-sampled educational assessment.
R. Darrell Bock, Michele F. Zimowski
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2016
The incorporation of a population model discussed in Chap. 14 leads to an extension where the population distribution is a multivariate distribution rather than a univariate one.
Margaret Wu, Hak Ping Tam, Tsung-Hau Jen
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The incorporation of a population model discussed in Chap. 14 leads to an extension where the population distribution is a multivariate distribution rather than a univariate one.
Margaret Wu, Hak Ping Tam, Tsung-Hau Jen
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Applications of Multilevel IRT Modeling
School Effectiveness and School Improvement, 2004The recent development of multilevel IRT models (Fox & Glas, 2001, 2003) has been shown to be very useful for analyzing relationships between observed variables on different levels containing measurement error. Model parameter estimates and their standard deviations are concurrently estimated taking account of measurement error in observed ...
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Infrared telescope in space: IRTS
Space Science Reviews, 1995The IRTS is a first Japanese infrared satellite mission which will be launched on February of 1995 by HII rocket. The IRTS is one of the mission experiments aboard the small space platform, SFU. The telescope aperture of the IRTS is 15cm, but is cooled by liquid Helium to realize very low background condition.
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Some Neglected Problems in IRT
Psychometrika, 1995The paper addresses three neglected questions from IRT. In section 1, the properties of the “measurement” of ability or trait parameters and item difficulty parameters in the Rasch model are discussed. It is shown that the solution to this problem is rather complex and depends both on general assumptions about properties of the item response functions ...
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Multilevel IRT model assessment
2004Modelling complex cognitive and psychological outcomes in, for example, educational assessment led to the development of generalized item response theory (IRT) models. A class of models was developed to solve practical and challenging educational problems by generalizing the basic IRT models.
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