Table 1 RMSE values of potential trait levels of respondents under various conditions generated by 2PL.
From: Individual random effects model for differences in trait distribution among respondents
Respondents | Items | 1PL | 2PL | IREM |
|---|---|---|---|---|
200 | 20 | 0.527 | 0.449 | 0.448 |
30 | 0.472 | 0.377 | 0.371 | |
50 | 0.464 | 0.305 | 0.308 | |
500 | 20 | 0.542 | 0.516 | 0.512 |
30 | 0.477 | 0.372 | 0.370 | |
50 | 0.455 | 0.305 | 0.300 | |
1000 | 20 | 0.526 | 0.442 | 0.442 |
30 | 0.480 | 0.407 | 0.368 | |
50 | 0.455 | 0.300 | 0.299 |
