Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 3 Cognitive complexity models of item response accuracy by class

From: Understanding examinees’ item responses through cognitive modeling of response accuracy and response times

	Class 1			Class 2			Class 3			Class 4
	b	SE	t-test	b	SE	t-test	b	SE	t-test	b	SE	t-test
Surfaces carried	0.800	0.044	18.143	0.931	0.041	22.531	0.223	0.049	4.512	0.701	0.062	11.252
Degrees rotation	0.010	0.042	0.240	0.094	0.040	2.700	0.134	0.039	3.044	0.604	0.056	10.770
Interaction	0.141	0.060	20.432	− 0.324	0.054	− .5.884	− 0.231	0.062	− 3.712	0.491	0.083	5.904
Fit index		0.664			0.716			0.481			0.723

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