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Item Response Theory1
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Applied Psychological…2
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Lucke, Joseph F.2
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"Rassling the Hog": The Influence of Correlated Item Error on Internal Consistency, Classical Reliability, and Congeneric Reliability
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Lucke, Joseph F. – Applied Psychological Measurement, 2005
The properties of internal consistency (alpha), classical reliability (rho), and congeneric reliability (omega) for a composite test with correlated item error are analytically investigated. Possible sources of correlated item error are contextual effects, item bundles, and item models that ignore additional attributes or higher-order attributes.…
Descriptors: Reliability, Statistical Analysis
The [Alpha] and the [Omega] of Congeneric Test Theory: An Extension of Reliability and Internal Consistency to Heterogeneous Tests
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Lucke, Joseph F. – Applied Psychological Measurement, 2005
Psychometric theory focuses primarily on tests that are homogeneous, measuring only one attribute of a psychosocial entity. However, the complexity of psychosocial behavior often requires tests that are heterogeneous, measuring more than one attribute. In this presentation, reliability and internal consistency are extended to heterogeneous tests…
Descriptors: Psychometrics, Item Response Theory, Test Reliability, Psychological Studies