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Table 1 Item adaptability

From: Application of nonparametric item response theory in determining the one-dimensionality and adaptability of TOEFL iBT listening test

Items

Hja

Monotonicity

Active comparison (ac)

Violations (vi)

Significant violations (zsig)

Crit.

1

0.78

7

0

0

0

2

0.90

7

0

0

0

3

0.62

7

0

0

0

4

0.81

4

0

0

0

5

0.89

7

0

0

0

6

0.71

4

0

0

0

7

0.66

4

0

0

0

8

0.69

7

0

0

0

9

0.70

4

0

0

0

10

0.83

4

0

0

0

11

0.44

7

0

0

0

12

0.92

4

0

0

0

13

0.85

7

0

0

0

14

0.83

2

0

0

0

15

0.97

7

0

0

0

16

0.65

5

0

0

0

17

0.94

7

0

0

0

18

0.80

5

0

0

0

19

0.92

5

0

0

0

20

0.78

5

0

0

0

21

0.65

5

0

0

0

22

0.55

7

0

0

0

23

0.88

7

0

0

0

24

0.57

5

0

0

0

25

0.59

5

0

0

0

26

0.87

5

0

0

0

27

0.89

7

0

0

0

28

0.77

4

0

0

0

29

0.74

5

0

0

0

30

0.78

7

0

0

0

31

0.98

4

0

0

0

32

0.56

5

0

0

0

33

0.54

7

0

0

0

34

0.29

4

0

0

0

35

0.58

4

0

0

0

36

0.99

4

0

0

0

37

0.88

5

0

0

0

38

0.63

5

0

0

0

39

0.85

7

0

0

0

40

0.69

5

0

0

0

  1. aScale H = 0.621