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Nering, Michael L., Ed.; Ostini, Remo, Ed. – Routledge, Taylor & Francis Group, 2010
This comprehensive "Handbook" focuses on the most used polytomous item response theory (IRT) models. These models help us understand the interaction between examinees and test questions where the questions have various response categories. The book reviews all of the major models and includes discussions about how and where the models…
Descriptors: Guides, Item Response Theory, Test Items, Correlation
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Pike, Gary R.; Kuh, George D.; Massa-McKinley, Ryan C. – NASPA Journal, 2008
This study examined the relationships among first-year students' employment, engagement, and academic achievement using data from the 2004 National Survey of Student Engagement. A statistically significant negative relationship was found between working more than 20 hours per week and grades, even after controlling for students' characteristics…
Descriptors: Student Employment, Part Time Employment, Grades (Scholastic), Academic Achievement