Table 9.
Bias of DC-GRM estimates of latent trait scores averaged in the skewness conditions.
True latent trait values |
|||||||
---|---|---|---|---|---|---|---|
Respondents | Items | Skew | |||||
500 | 5 | 0.00 | 0.07 | 0.03 | −0.02 | 0.05 | −0.12 |
0.50 | 0.12 | 0.00 | 0.01 | −0.03 | −0.11 | ||
0.75 | 0.11 | 0.04 | 0.00 | 0.00 | −0.11 | ||
25 | 0.00 | −0.06 | 0.01 | −0.01 | 0.00 | 0.01 | |
0.50 | −0.04 | 0.00 | 0.02 | 0.02 | 0.05 | ||
0.75 | −0.07 | −0.01 | 0.03 | 0.04 | 0.10 | ||
50 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.01 | |
0.50 | −0.02 | −0.02 | 0.00 | 0.01 | 0.02 | ||
0.75 | −0.03 | 0.00 | 0.02 | 0.04 | 0.08 | ||
1000 | 5 | 0.00 | 0.06 | 0.00 | 0.01 | −0.02 | −0.09 |
0.50 | 0.11 | −0.01 | 0.01 | 0.00 | −0.08 | ||
0.75 | 0.10 | −0.01 | 0.01 | 0.00 | −0.02 | ||
25 | 0.00 | −0.03 | −0.01 | 0.02 | −0.01 | 0.02 | |
0.50 | −0.03 | 0.00 | 0.00 | 0.01 | 0.06 | ||
0.75 | −0.05 | 0.01 | −0.01 | 0.03 | 0.05 | ||
50 | 0.00 | −0.02 | 0.00 | 0.00 | −0.01 | 0.00 | |
0.50 | −0.02 | −0.01 | 0.00 | 0.02 | 0.02 | ||
0.75 | −0.02 | 0.01 | 0.03 | 0.04 | 0.07 |