Generalizability Theory: Overview
نویسندگان
چکیده
منابع مشابه
Score Generalizability of Writing Assessment: the Effect of Rater’s Gender
The score reliability of language performance tests has attracted increasing interest. Classical Test Theory cannot examine multiple sources of measurement error. Generalizability theory extends Classical Test Theory to provide a practical framework to identify and estimate multiple factors contributing to the total variance of measurement. Generalizability theory by using analysis of variance ...
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Item response theory is usually applied to items with a selected-response format, such as multiple choice items, whereas generalizability theory is usually applied to constructed-response tasks assessed by raters. However, in many situations, raters may use rating scales consisting of items with a selected-response format. This chapter presents a short overview of how item response theory and g...
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Historically, reliability issues in psychology and education have been addressed principally using classical test theory (CTT), which postulates that an observed score can be decomposed into a “true” score and a single, undifferentiated random error term, E (Feldt & Brennan, 1989). Generalizability (G) theory liberalizes CTT by providing models and methods that allow an investigator to disentan...
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