Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 2 Descriptive statistics and internal consistency reliability for person estimates in four-class solution

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

Class	Size	Trait estimates			Response time
Class	Size	Mean	SD	Rel.	Mean	SD
1	0.334	1.192	1.340	0.802	25.281	5.763
2	0.292	0.059	0.700	0.620	25.121	6.700
3	0.201	− 0.846	0.512	0.272	21.493	7.395
4	0.173	1.132	1.082	0.745	25.245	5.424

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