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Impact of ability distribution on IRT observed score equating and IRT chained equipercentile equating

Year: 2024

Type: article

Abstract: Equating is an important statistical process used to adjust for differences in difficulty across different test forms. Based on Item Response Theory (IRT), observed score equating (OSE) method is widely used in practice. When implementing IRT OSE, item parameters and ability distributions are necessary to construct fitted score distributions for both new and old forms. Traditional equipercentile equating is then used to equate the two forms.

Source: Iowa Research Online (The University of Iowa)

DOI: 10.25820/etd.007592

Author: Liang, Min

Language: English

Topic: Psychometric Methodologies and Testing

Subfield: Management Science and Operations Research

Field: Decision Sciences

Domain: Social Sciences

Open Access status: green

OpenAlex ID: W6964980321

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