Table 2 Descriptive statistics, reliability, and percentage of children rated as experiencing clinical levels of difficulties

Conners-3

N

M

SD

%

T-score

>= 60

Skew

Kurt

Min

Max

α

ω

Inattention

702

11.68

3.44

90.48

-1.11

0.54

0

15

0.92

0.93

Hyperactivity/Impulsivity

704

10.96

5.63

75.77

-0.39

-1.11

0

18

0.95

0.96

Learning Problems

704

9.83

3.48

87.54

-0.42

-0.56

0

15

0.78

0.86

Aggression

701

3.55

3.99

49.58

1.21

0.55

0

15

0.93

0.94

Peer Relations

696

5.50

4.47

67.37

0.47

-0.97

0

15

0.93

0.93

BRIEF

N

M

SD

%

T-score >= 60

Skew

Kurt

Min

Max

α

ω

Inhibition

707

21.51

6.23

60.5

-0.24

-1.21

10

30

0.97

0.98

Shifting

708

17.09

4.28

66.11

-0.27

-0.90

8

24

0.91

0.93

Emotional Control

707

22.12

5.59

61.9

-0.37

-0.93

10

30

0.95

0.97

Initiation

707

17.69

3.33

70.59

-0.37

-0.33

8

24

0.82

0.87

Working Memory

704

25.81

3.94

89.08

-1.14

0.89

12

30

0.93

0.95

Planning

698

29.06

4.97

85.15

-0.79

0.18

13

36

0.90

0.92

Organisation

708

14.62

3.22

56.58

-0.81

-0.26

6

18

0.92

0.95

Monitoring

706

18.98

3.53

68.21

-0.56

-0.36

9

24

0.86

0.92

CCC-2

N

M

SD

%

Scaled score

<= 6

Skew

Kurt

Min

Max

α

ω

Speech

702

5.18

5.03

62.75

1.10

0.55

0

21

0.90

0.94

Syntax

704

5.11

4.62

66.67

1.00

0.36

0

20

0.87

0.93

Semantics

702

8.16

4.74

78.15

0.37

-0.43

0

21

0.84

0.91

Coherence

705

8.57

5.13

77.17

0.21

-0.87

0

21

0.85

0.91

Inappropriate Initiation

702

10.79

5.71

68.21

-0.04

-1.07

0

21

0.88

0.91

Stereotyped Language

703

6.10

4.27

64.99

0.62

-0.25

0

20

0.80

0.88

Use of Context

704

9.58

5.48

77.87

0.05

-0.94

0

21

0.87

0.91

Nonverbal Communication

703

7.71

5.05

73.81

0.34

-0.81

0

21

0.84

0.90

Social Relations

703

6.61

4.94

70.87

0.49

-0.67

0

20

0.85

0.89

Interests

702

9.19

4.61

68.21

0.21

-0.62

0

21

0.80

0.87