| |
Standard (n = 1320)
|
Reverse (n = 1320)
|
Random (n = 1320)
|
|---|
|
Infit
|
Outfit
|
PTMEA
|
Infit
|
Outfit
|
PTMEA
|
Infit
|
Outfit
|
PTMEA
|
|---|
|
Rating criterion
|
|
Content
|
1.09
|
1.07
|
.80
|
0.98
|
0.98
|
.80
|
1.03
|
1.02
|
.77
|
|
Organization
|
0.91
|
0.90
|
.84
|
0.95
|
0.93
|
.83
|
0.87
|
0.86
|
.83
|
|
Vocabulary
|
0.90
|
0.91
|
.76
|
0.97
|
0.97
|
.78
|
0.99
|
0.99
|
.76
|
|
Language use
|
1.06
|
1.06
|
.75
|
1.07
|
1.06
|
.78
|
1.08
|
1.07
|
.76
|
|
Halo index
|
|
Separation ratio
|
3.26
|
3.02
|
4.58
|
|
Separation index (Strata)
|
4.68
|
4.36
|
6.44
|
|
Reliability of separation
|
.91
|
.90
|
.95
|
|
Fixed-effect (all same) chi-square statistic
|
34.5 (df = 3, p < .001)
|
30.3 (df = 3, p < .001)
|
66.1 (df = 3, p < .001)
|
- Note. PTMEA = point-measure biserial correlation
