An IERI – International Educational Research Institute Journal
Table 6 Percent significant residuals under different unidimensional models
From: Assessment of fit of item response theory models used in large-scale educational survey assessments
Residual | Model | LTT math age 9 | Reading grade 12 | Math grade 8 | Science grade 12 |
|---|---|---|---|---|---|
Item-fit residual | 1PL/PCM | 67 | 43 | 75 | 47 |
2PL/GPCM | 40 | 26 | 64 | 33 | |
C3PL/GPCM | 35 | 27 | 64 | 28 | |
3PL/GPCM | 28 | 29 | 64 | 33 | |
First-order marginal | 1PL/PCM | 0 | 0 | 0 | 0 |
2PL/GPCM | 0 | 0 | 0 | 0 | |
C3PL/GPCM | 29 | 5 | 0 | 19 | |
3PL/GPCM | 0 | 0 | 0 | 0 | |
Second-order marginal | 1PL/PCM | 47 | 15 | 27 | 18 |
2PL/GPCM | 31 | 13 | 19 | 15 | |
C3PL/GPCM | 31 | 13 | 19 | 15 | |
3PL/GPCM | 31 | 14 | 19 | 15 |