Test-level and Item-level Model Fit Comparison of General vs. Specific Diagnostic Classification Models: A Case of True DCM

Language Testing in Asia

Table 3 Model fit indices

Model	#N par	AIC	BIC	M₂	RMSEA₂	RMSEA₂ CI 1	RMSEA₂ CI 2	SRMSR	-2log likelihood
G-DINA	175	78939	79898	982.48	0.0204	0.0182	0.0225	0.0316	78589.31
LLM	131	79124	79842	1150.78	0.0224	0.0224	0.0204	0.0334	78862.88
ACDM	131	79229	79948	1132.69	0.0220	0.0200	0.0240	0.0355	78967.78
RRUM	131	79272	79990	1141.35	0.0222	0.0202	0.0241	0.0358	79010.32
DINA	91	80037	80536	1373.11	0.0250	0.0232	0.0269	0.0471	79855.69
DINO	91	80123	80622	1377.35	0.0251	0.0233	0.0270	0.0479	79941.99