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| Computergestützte adaptive Testung mit dem Rasch-Modell (CAT-Rasch)× | Differenzielles Item-Funktionieren (DIF)× | |
|---|---|---|
| Fachgebiet | Psychometrie | Psychometrie |
| Familie | Latent structure | Latent structure |
| Entstehungsjahr≠ | 1960 (Rasch model); CAT integration from 1970s onward | 1970s–1993 |
| Urheber≠ | Georg Rasch (measurement model); adaptive testing formalized by Wainer, van der Linden, and others | William H. Angoff and colleagues (ETS); systematized by Holland & Wainer |
| Typ≠ | Adaptive psychometric measurement | Item-level bias detection |
| Wegweisende Quelle≠ | Wainer, H. (Ed.). (2000). Computerized Adaptive Testing: A Primer (2nd ed.). Lawrence Erlbaum Associates. ISBN: 978-0805835113 | Holland, P. W. & Wainer, H. (Eds.) (1993). Differential Item Functioning. Lawrence Erlbaum Associates. ISBN: 978-0805809589 |
| Aliasnamen | CAT-Rasch, Rasch-based CAT, adaptive Rasch testing, computerized adaptive measurement | DIF, item bias analysis, measurement non-equivalence, item-level measurement bias |
| Verwandt | 5 | 5 |
| Zusammenfassung≠ | Computerized adaptive testing with the Rasch model selects items in real time based on each examinee's evolving ability estimate, so that every person receives a test precisely calibrated to their proficiency level. The result is a shorter, more efficient measurement instrument that loses none of the precision of a full-length fixed-form test. | Differential item functioning identifies test or survey items that behave differently for examinees from different groups — such as gender, ethnicity, or language background — after controlling for the underlying ability or trait being measured. DIF analysis is essential for fairness evaluation in educational testing and psychological scale development. |
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