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 9 Model selection at the item level

Item	Model	P value	Item	Model	P value
1	RRUM	0.448	31	LLM	0.994
6	RRUM	0.9162	34	G-DINA
7	LLM	0.214	40	RRUM	0.551
10	RRUM	0.737	42	DINA	0.695
11	ACDM	0.759	44	LLM	0.897
12	ACDM	0.433	45	ACDM	0.237
13	LLM	0.234	47	RRUM	0.367
14	LLM	0.909	49	LLM	0.982
15	LLM	0.109	50	ACDM	0.237
16	RRUM	0.215	51	LLM	0.378
17	LLM	0.979	52	ACDM	0.528
19	RRUM	0.458	53	RRUM	0.939
20	LLM	0.070	54	LLM	0.236
21	DINO	0.262	55	LLM	0.638
23	G-DINA		56	ACDM	0.501
24	LLM	0.823	57	LLM	0.768
26	RRUM	0.264	58	ACDM	0.585
27	LLM	0.757	59	LLM	0.678
30	LLM	0.598	60	RRUM	0.062