Jeon, Minjeong; Rijmen, Frank; Rabe-Hesketh, Sophia - In: Journal of Educational and Behavioral Statistics 38 (2013) 1, pp. 32-60
The authors present a generalization of the multiple-group bifactor model that extends the classical bifactor model for categorical outcomes by relaxing the typical assumption of independence of the specific dimensions. In addition to the means and variances of all dimensions, the correlations...