Posts on psychometrics: The Science of Assessment

analytics-pencils-guttman

Guttman Errors: Additional Insight into Examinees

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Guttman errors are a concept derived from the Guttman Scaling…
student essay rubric
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What is a rubric?

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What is a rubric? It's a rule for converting unstructured responses…
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6 Reasons for Online Essay Marking

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Why online essay marking? Essay questions and other extended…
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What is Item Banking? How can it improve my assessment?

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Item banking refers to the purposeful creation of a database…
psychometrics in a fog
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What is psychometrics supposed to be doing?

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Today I read an article in The Industrial-Organizational Psychologist…
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Item Writing Tips

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With so many things to consider, it’s no wonder psychometricians…
modified-angoff
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How do I conduct a modified-Angoff study?

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There are a number of acceptable methodologies in the psyychometric…
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What is Scaling?

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I often hear this question, especially regarding the scaled scoring…
item response theory
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What is item response theory?

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Item response theory (IRT) represents an important innovation…