Table 3.

Deviance and Weighted Fit Statistics by Model

Rating Scale Model							Partial Credit Model
Deviance (df) = 15483.56 (20)							Deviance (df) = 15205.42 (65)
Infit Statistics							Infit Statistics
Item #	Item	Item by response option					Item	Item by response option
	Mnsq (t)	0 Mnsq (t)	1 Mnsq (t)	2 Mnsq (t)	3 Mnsq (t)	4 Mnsq (t)	Mnsq (t)	0 Mnsq (t)	1 Mnsq (t)	2 Mnsq (t)	3 Mnsq (t)	4 Mnsq (t)
1	0.82 (−2.4)	2.75 (14.3)	2.56 (13.7)	1.93 (10.2)	3.24 (20.9)	3.04 (18.3)	0.91 (−1.2)	1.04 (0.2)	0.97 (−0.1)	0.93 (−1.0)	0.95 (−1.4)	0.96 (−0.7)
2	0.99 (−0.2)						1.07 (0.9)	1.06 (0.5)	0.96 (−0.4)	0.96 (−0.6)	0.98 (−0.5)	1.11 (1.6)
3	0.92 (−1.1)						0.95 (−0.6)	0.90 (−0.6)	0.98 (−0.1)	1.00 (0.1)	0.92 (−1.9)	0.85 (−2.6)
4	1.25 (2.6)						1.32 (3.3)	1.09 (0.4)	1.15 (0.8)	0.98 (−0.1)	0.97 (−0.6)	0.93 (−1.2)
5	1.42 (5.3)						1.40 (5.0)	1.38 (4.8)	0.98 (−0.2)	1.03 (0.4)	1.06 (1.0)	0.91 (−1.0)
6	1.36 (4.4)						1.33 (4.0)	1.23 (3.2)	1.02 (0.2)	1.00 (0.1)	1.01 (0.1)	1.02 (0.2)
7	1.24 (3.1)						1.14 (1.8)	1.24 (2.4)	0.99 (−0.1)	0.98 (−0.2)	0.93 (−1.3)	0.80 (−3.3)
8	0.78 (−2.9)						0.78 (−3.0)	1.07 (0.4)	0.98 (−0.1)	0.86 (−1.8)	0.92 (−1.7)	0.85 (−2.8)
9	0.92 (−0.9)						0.99 (−0.1)	0.98 (0.0)	1.01 (0.1)	0.92 (−0.9)	0.96 (−0.9)	1.02 (0.3)
10	0.79 (−3.0)						0.75 (−3.6)	0.85 (−1.2)	0.98 (−0.1)	0.88 (−1.4)	0.91 (−2.1)	0.85 (−2.7)
11	0.97 (−0.5)						1.07 (1.0)	1.00 (0.0)	0.97 (−0.4)	0.99 (−0.1)	0.93 (−1.7)	0.99 (−0.1)
12	0.76 (−3.7)						0.77 (−3.5)	0.87 (−1.5)	0.93 (−0.9)	0.93 (−0.8)	0.89 (−2.6)	0.86 (−2.1)
13	0.61 (−6.5)						0.68 (−5.2)	0.92 (−1.0)	0.90 (−1.5)	0.91 (−1.2)	0.81 (−4.6)	0.85 (−1.9)
14	1.33 (4.4)						1.19 (2.4)	1.32 (3.6)	0.98 (−0.1)	1.01 (0.1)	0.97 (−0.5)	0.84 (−2.5)
15	1.31 (4.0)						1.28 (3.4)	1.16 (2.3)	1.00 (0.1)	1.02 (0.3)	0.97 (−0.4)	1.15 (1.5)
16	1.12 (1.5)						1.21 (2.8)	1.05 (0.8)	1.00 (0.0)	0.97 (−0.6)	1.08 (0.9)	1.27 (1.3)

Misfitting items bolded. Misfit = Mnsq <0.75 or >1.33 and t-statistic < −2 or >2.