Table 6 Bias analysis of Test-taker and test type
From: Developing and evaluating a dynamic assessment of listening comprehension in an EFL context
Candidate | Ability | Obsvd Score | Exp. Score | Obs-Exp Average | Bias Size | Model S.E. | t | Infit MnSq | Test type |
|---|---|---|---|---|---|---|---|---|---|
23 | 2.13 | 20 | 25.3 | -.38 | 1.40 | .44 | 3.22 | 1.8 | Dynamic |
53 | 1.65 | 16 | 21.7 | -.41 | 1.05 | .40 | 2.60 | .3 | Dynamic |
31 | 2.40 | 23 | 25.9 | -.21 | 1.02 | .51 | 2.01 | .9 | Dynamic |
52 | 1.36 | 15 | 20.3 | -.38 | .92 | .40 | 2.30 | .2 | Dynamic |
41 | 1.14 | 18 | 22.5 | -.32 | .90 | .41 | 2.17 | .5 | Dynamic |
55 | 1.46 | 17 | 20.8 | -.27 | .69 | .41 | 1.69 | .4 | Dynamic |
51 | 1.23 | 16 | 19.6 | -.26 | .62 | .40 | 1.55 | .3 | Dynamic |
54 | 1.17 | 18 | 19.3 | -.09 | .23 | .41 | .56 | .4 | Dynamic |
21 | .60 | 44 | 46.2 | -.06 | .13 | .24 | .54 | .4 | Static |
20 | .59 | 18 | 18.7 | -.05 | .12 | .41 | .29 | 1.9 | Dynamic |
42 | .11 | 17 | 17.2 | -.02 | .04 | .41 | .10 | .4 | Dynamic |
2 | 1.89 | 65 | 63.7 | .03 | -.12 | .30 | -.39 | 1.8 | Static |
31 | 2.40 | 73 | 70.1 | .07 | -.41 | .40 | -1.01 | 1.7 | Static |
11 | .69 | 23 | 17.9 | .36 | -1.03 | .51 | -2.02 | .8 | Dynamic |
27 | .89 | 26 | 20.8 | .37 | -1.57 | .74 | -2.12 | 1.0 | Dynamic |
Mean (count: 120) | 36.6 | 36.6 | .00 | -.02 | .38 | .02 | 1.0 | Â | |
SD | 17.5 | 17.2 | .14 | .46 | .13 | 1.01 | .3 | Â | |