Evidence for the Validity of a Rasch Model Technique for Identifying Differential Item Functioning

Evidence for the Validity of a Rasch Model Technique for Identifying Differential Item Functioning

An analysis of differential item functioning (DIF) in a medical specialty certification examination taken by 416 candidates through a simple Rasch model is presented. These analysis results serve as validity evidence for use of the Rasch model as a way to examine DIF in examinations. It is concluded...

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Veröffentlicht in:Journal of outcome measurement (Wheaton, Ill.) Ill.), 1998, Vol.2 (1), p.33-42
Hauptverfasser: Scheuneman, Janice Dowd, Subhiyah, Raja G
Format: Artikel
Sprache:eng
Schlagworte:
Bias
Certification
Certification - methods
Educational Measurement - statistics & numerical data
Humans
Identification
Item Bias
Item Response Theory
Licensing Examinations (Professions)
Medical Education
Medicine
Models, Statistical
Physicians
Psychometrics - methods
Rasch Model
Reproducibility of Results
Specialization
Test Items
United States
Validity
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Zusammenfassung:An analysis of differential item functioning (DIF) in a medical specialty certification examination taken by 416 candidates through a simple Rasch model is presented. These analysis results serve as validity evidence for use of the Rasch model as a way to examine DIF in examinations. It is concluded that complex procedures are not necessary to determine DIF. (SLD)
ISSN:1090-655X