Modeling Differential Item Functioning Using a Generalization of the Multiple-Group Bifactor Model DIF
- Author(s):
- Jeon, Minjeong; Rijmen, Frank; Rabe-Hesketh, Sophia
- Publication Year:
- 2013
- Source:
- Journal of Educational and Behavioral Statistics, v38 n1 p32-60, Feb 2013
- Document Type:
- Article
- Page Count:
- 29
- Subject/Key Words:
- Multiple-Group Bifactor Model, Conditional Independence, Differential Item Functioning (DIF), Bifactor Model, Testlets, Graphical Model, EM Algorithm