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Topczewski, Anna Marie – ProQuest LLC, 2013
Developmental score scales represent the performance of students along a continuum, where as students learn more they move higher along that continuum. Unidimensional item response theory (UIRT) vertical scaling has become a commonly used method to create developmental score scales. Research has shown that UIRT vertical scaling methods can be…
Descriptors: Item Response Theory, Scaling, Scores, Student Development
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Wang, Wen-Chung; Chen, Hsueh-Chu – Educational and Psychological Measurement, 2004
As item response theory (IRT) becomes popular in educational and psychological testing, there is a need of reporting IRT-based effect size measures. In this study, we show how the standardized mean difference can be generalized into such a measure. A disattenuation procedure based on the IRT test reliability is proposed to correct the attenuation…
Descriptors: Test Reliability, Rating Scales, Sample Size, Error of Measurement
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Howell, Colleen J.; Howell, Ryan T.; Schwabe, Kurt A. – Social Indicators Research, 2006
Recent studies investigating need theory and the extent to which money can buy happiness have called for more research within culturally homogeneous samples from developing countries to explore this relationship. We examine wealth as a measure of possessions and savings and relate this to subjective well-being (SWB) among poor indigenous farmers…
Descriptors: Life Satisfaction, Economically Disadvantaged, Indigenous Populations, Agricultural Occupations