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) |