Construct · 1 fields · 1 citations

item: a standalone construct

One name. One construct. A landmark on the map.

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item1 CONSTRUCTTest itemLORD & NOVICK · 1968

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Psychometrics

A single question that elicits one scorable response

In psychometrics an item is the smallest unit of a test: a single question, prompt, or task that elicits one scorable response from a person, and whose statistical behaviour (its difficulty, its discrimination, how it relates to the latent trait) is the building block of the whole instrument. Lord and Novick's Statistical theories of mental test scores set the formal framework in which each item's responses are modelled and aggregated into a test score. The referent is a measurement unit characterised by its response distribution and its fit to a scaling model, not a line of code, a vocabulary entry, or a thing on a shelf.[1]

Unit
A single scorable question and its response, described by item parameters
Recovery means
Not applicable
Measured by
Characterised by item difficulty, item discrimination, and fit to a response model estimated across examinees

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Nearby constructs

context4 fields · 7 citationsjingle · one word, four constructsdifficulty3 fields · 3 citationsjingle · one word, three constructsrecord2 fields · 3 citationsjingle · one word, two constructs

References

  1. Lord, F. M., & Novick, M. R. (1968). Statistical theories of mental test scores. Addison-Wesley. ISBN 9781593119348

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