Table 1 Categorization of the DIF sizes
DIF category | Category explanation | DIF contrast |
|---|---|---|
C | Moderate to large | |DIF| ≥ 0.64 logits |
B | Slight to moderate | |DIF| ≥ 0.43 to < 0.64 logits |
A | Negligible | |DIF| < 0.43 logits |
DIF category | Category explanation | DIF contrast |
|---|---|---|
C | Moderate to large | |DIF| ≥ 0.64 logits |
B | Slight to moderate | |DIF| ≥ 0.43 to < 0.64 logits |
A | Negligible | |DIF| < 0.43 logits |