PubMed · 2001 · 314 citations · 0 references
EducationEducational MeasurementPsychologyItem Response TheoryMethod ValidationPsychometricsAssessment ValidityMeasurement ValidityReliabilityTest ReliabilityTest ValidityValidity EvidencePsychometric Assessment ValidityRasch Measurement TheoryRasch Model AnalysisRasch Model FitRasch Model Standard SettingReliability EvidenceReliability In TestingValidity In Testing
In an era of high stakes testing and evaluation in education, psychology, and health care, there is need for rigorous methods and standards for obtaining evidence of the reliability of measures and validity of inferences. Messick (1989, 1995), the Standard for Educational and Psychological Testing (American Psychological Association, American Educational Research Association, and National Council on Measurement in Education, 1999), and the Medical Outcomes Trust (1995), among others, have described methods that may be used to gather evidence for reliability and validity, but ignored the potential role Rasch measurement may contribute to this process. This article will outline methods in Rasch measurement that are used to gather evidence for reliability and validity and attempt to articulate how these methods may be linked with the current views of reliability and validity.