Table 2 The results of the classical and Rasch item analyses (N = 4407)

Item

Frequency/readability

IF

ID

Diff

SE

Infit

item

Frequency/readability

IF

ID

Diff

SE

Infit

1

1

.96

.26

−2.82

0.08

0.9

61

1

.95

.30

−2.61

0.07

0.9

2

1

.90

.31

−1.74

0.05

1.0

62

2

.96

.31

−2.77

0.08

0.9

3

1

.90

.46

−1.78

0.05

0.9

63

2

.85

.48

−1.24

0.04

0.9

4

2

.82

.47

−0.98

0.04

0.9

64

3

.84

.33

−1.19

0.04

1.0

5

3

.92

.11

−1.97

0.06

1.1

65

3

.57

.37

0.41

0.03

1.0

6

3

.83

.45

−1.06

0.04

0.9

66

3

.75

.51

−0.56

0.04

0.9

7

3

.67

.27

−0.10

0.03

1.1

67

3

.84

.54

−1.15

0.04

0.8

8

5

.63

.32

0.10

0.03

1.0

68

4

.81

.41

−0.92

0.04

0.9

9

6

.53

.27

0.58

0.03

1.1

69

6

.67

.38

−0.09

0.03

1.0

10

7

.40

.32

1.19

0.03

1.0

70

8

.19

.14

2.33

0.04

1.1

11

1

.80

.40

−0.89

0.04

0.9

71

1

.93

.46

−2.17

0.06

0.8

12

2

.68

.42

−0.15

0.03

0.9

72

2

.93

.39

−2.15

0.06

0.9

13

2

.41

.32

1.11

0.03

1.0

73

2

.92

.48

−2.08

0.06

0.8

14

3

.72

.42

−0.37

0.04

0.9

74

2

.92

.47

−2.02

0.06

0.8

15

4

.60

.39

0.27

0.03

1.0

75

3

.84

.45

−1.14

0.04

0.9

16

4

.33

.17

1.50

0.03

1.1

76

4

.92

.40

−2.00

0.06

0.9

17

4

.61

.37

0.21

0.03

1.0

77

4

.76

.51

−0.64

0.04

0.9

18

5

.38

.25

1.29

0.03

1.1

78

5

.45

.37

0.96

0.03

1.0

19

6

.96

.15

−2.76

0.08

1.0

79

6

.37

.18

1.33

0.03

1.1

20

7

.33

.11

1.51

0.03

1.2

80

7

.72

.38

−0.36

0.04

1.0

21

6.7(13)

.46

.44

0.89

0.03

0.9

81

6.7(12)

.85

.36

−1.24

0.04

0.9

22

3.0(13)

.81

.09

−0.93

0.04

1.2

82

7.6(13)

.81

.45

−0.95

0.04

0.9

23

11.2(13)

.57

.32

0.39

0.03

1.0

83

4.6(16)

.51

.39

0.65

0.03

1.0

24

10.7(15)

.51

.34

0.66

0.03

1.0

84

8.3(16)

.96

.31

−2.67

0.07

0.9

25

4.7(11)

.14

.23

2.73

0.05

1.0

85

9.2(19)

.89

.20

−1.65

0.05

1.0

26

11.2(11)

.42

.32

1.07

0.03

1.0

86

6.7(19)

.77

.42

−0.66

0.04

0.9

27

5.8(12)

.61

.05

0.18

0.03

1.3

87

12.0(25)

.32

.35

1.57

0.03

1.0

28

3.8(12)

.51

.07

0.65

0.03

1.2

88

8.7(34)

.80

.35

−0.89

0.04

1.0

29

6.7(12)

.27

.29

1.85

0.04

1.0

89

12.0(39)

.59

.39

0.30

0.03

1.0

30

1.2(12)

.14

.19

2.73

0.04

1.1

90

8.0(11)

.79

.50

−0.77

0.04

0.9

31

5.8(11)

.53

.40

0.55

0.03

1.0

91

8.3(15)

.59

.45

0.31

0.03

0.9

32

9.7(12)

.28

.40

1.80

0.04

0.9

92

12.0(17)

.85

.30

−1.25

0.04

1.0

33

5.8(13)

.68

.45

−0.17

0.03

0.9

93

12.0(32)

.63

.30

0.11

0.03

1.0

34

6.7(14)

.64

.30

0.03

0.03

1.0

94

9.9(15)

.84

.44

−1.18

0.04

0.9

35

12.0(12)

.35

.38

1.41

0.03

1.0

95

4.9(13)

.65

.37

0.02

0.03

1.0

36

10.0(14)

.56

.37

0.41

0.03

1.0

96

12.0(10)

.77

.35

−0.66

0.04

1.0

37

3.8(12)

.31

.36

1.61

0.03

1.0

97

12.0(25)

.70

.41

−0.24

0.03

0.9

38

6.9(11)

.71

.14

−0.33

0.04

1.2

98

8.0(22)

.64

.36

0.05

0.03

1.0

39

7.7(12)

.94

.10

−2.37

0.07

1.1

99

12.0(30)

.41

.36

1.13

0.03

1.0

40

3.8(12)

.39

.36

1.23

0.03

1.0

100

12.0(38)

.68

.40

−0.13

0.03

1.0

41

4.0(13)

.83

.39

−1.07

0.04

0.9

101

7.5(28)

.65

.38

0.01

0.03

1.0

42

8.3(10)

.85

.30

−1.29

0.04

1.0

102

9.5(32)

.73

.49

−0.41

0.04

0.9

43

10.1(36)

.55

.33

0.50

0.03

1.0

103

7.8(35)

.89

.41

−1.69

0.05

0.9

44

6.7(28)

.52

.31

0.60

0.03

1.0

104

12.0(45)

.64

.49

0.06

0.03

0.9

45

7.9(28)

.53

.36

0.59

0.03

1.0

105

7.0(42)

.65

.51

−0.02

0.03

0.9

46

8.1(49)

.43

.27

1.06

0.03

1.1

106

8.6(53)

.38

.28

1.25

0.03

1.0

47

12.0(42)

.44

.28

0.99

0.03

1.1

107

10.7(55)

.61

.35

0.18

0.03

1.0

48

12.0(50)

.48

.17

0.80

0.03

1.2

108

12.0(76)

.43

.39

1.05

0.03

1.0

49

10.7(7)

.67

.24

−0.12

0.03

1.1

109

10.6(76)

.62

.34

0.17

0.03

1.0

50

4.8(12)

.66

.31

−0.03

0.03

1.0

110

7.3(82)

.53

.33

0.57

0.03

1.0

51

5.2(15)

.56

.46

0.43

0.03

0.9

111

11.4(79)

.35

.24

1.41

0.03

1.1

52

7.0(21)

.48

.12

0.80

0.03

1.2

112

9.4(35)

.52

.35

0.63

0.03

1.0

53

11.0(18)

.72

.20

−0.35

0.04

1.1

113

5.1(36)

.70

.42

−0.27

0.04

0.9

54

5.3(21)

.26

.15

1.88

0.04

1.1

114

12.0(48)

.73

.38

−0.43

0.04

1.0

55

11.0(37)

.59

.17

0.31

0.03

1.2

115

10.0(52)

.40

.39

1.16

0.03

1.0

56

8.1(51)

.22

.20

2.17

0.04

1.1

116

7.6(58)

.86

.49

−1.32

0.05

0.8

57

7.0(38)

.28

.14

1.80

0.04

1.1

117

12.0(56)

.63

.43

0.10

0.03

0.9

58

6.5(46)

.25

.11

1.99

0.04

1.1

118

11.7(56)

.57

.47

0.39

0.03

0.9

59

7.4(66)

.40

.09

1.19

0.03

1.2

119

8.7(61)

.27

.24

1.82

0.04

1.0

60

7.5(55)

.57

.32

0.37

0.03

1.0

120

9.5(64)

.34

.22

1.45

0.03

1.1