Table 4.

Estimates from the constrained graded response model

Item	Threshold parameters				Discrimination
	b1	b2	b3	b4
1	−0.347	0.241	1.019	1.565	3.034
2	−0.831	−0.137	0.553	1.296	3.034
3	−0.407	0.088	0.597	1.329	3.034
4	0.270	0.638	1.148	1.952	3.034
5	−0.588	0.172	0.734	1.586	3.034
6	−1.095	−0.296	0.312	0.966	3.034
7	−0.985	−0.302	0.609	1.258	3.034
8	−1.232	−0.666	0.058	0.630	3.034
9	−0.863	−0.200	0.413	1.166	3.034
10	−0.834	−0.067	0.565	1.481	3.034
11	−1.055	−0.155	0.554	1.242	3.034
12	−0.971	−0.299	0.550	1.143	3.034