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| 컴퓨터화 적응 검사 (CAT-Rasch)× | 차별 문항 기능(Differential Item Functioning, DIF)× | |
|---|---|---|
| 분야 | 심리측정학 | 심리측정학 |
| 계열 | Latent structure | Latent structure |
| 기원 연도≠ | 1960 (Rasch model); CAT integration from 1970s onward | 1970s–1993 |
| 창시자≠ | Georg Rasch (measurement model); adaptive testing formalized by Wainer, van der Linden, and others | William H. Angoff and colleagues (ETS); systematized by Holland & Wainer |
| 유형≠ | Adaptive psychometric measurement | Item-level bias detection |
| 원전≠ | 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 |
| 별칭 | CAT-Rasch, Rasch-based CAT, adaptive Rasch testing, computerized adaptive measurement | DIF, item bias analysis, measurement non-equivalence, item-level measurement bias |
| 관련 | 5 | 5 |
| 요약≠ | 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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