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Skip to Search Results- 2Item Response Theory
- 1Comparability studies
- 1Computer-based tests
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Comparing Performance Across Test Administration Modes in a Large-Scale Testing Environment
DownloadSpring 2014
The purpose of this study was to complete a secondary analysis of the data collected for a Mathematics 30-2 field test to examine the comparability of the psychometric properties and the students’ scores for a computer-based and paper-and-pencil form of the same test. A computer familiarity...
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Fall 2011
Vertical scaling is the process of establishing a numerical test score scale across several age or grade levels. Given that the current literature does not indicate which of the different vertical scaling procedure works “best” for all situations. This study evaluated the performance of four...
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Methods for determining whether subscore reporting is warranted in large-scale achievement assessments
DownloadFall 2011
Officials of large-scale assessment programs often want to report subscale scores in addition to the total test score. However, in addition to the reliability of reported scores, evidence that subscales reveal real differences in student performances must be obtained in order to support reporting...
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Polytomous item response theory parameter recovery: An investigation of non-normal distributions and small sample size
DownloadSpring 2012
Item Response Theory (IRT) has been extensively used in educational research with large sample sizes and normally distributed traits. However, there are cases in which distributions are not normal, and research has shown that the estimation of parameters becomes problematic with non-normal data....