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AIC (Akaike Information Criterion) values for model comparisons for same and different items
| Items – same identity | p-value | Items – different identities | p-value | |
|---|---|---|---|---|
| Rasch | 46944.5 | 59421.2 | ||
| Two-parameter | 46665.0 | < .001 | 58962.3 | < .001 |
| Three-parameter | 46809.0 | .484 | 59080.6 | .071 |
