Table 3 Correlations between age, IQ, the symptom scales of the Conners-3 parent ratings, variables of the KiTAP and the QbTest factors for the child sample

1 age

–

2 IQ

.01

–

3 CP DSM inattention

− .15

− .41**

–

4 CP DSM HY/Imp

− .31*

− .18

.70**

–

5 CP ADHD index

− .27*

− .38*

.89**

.82**

–

6 KiTAP1 RT

− .21

− .10

.19

.21

.22

–

7 KiTAP1 RT SD

− .02

− .23

.04

.09

.13

.44**

–

8 KiTAP1errors

− .11

− .01

− .21

− .21

− .20

− .40**

.04

–

9 KiTAP1omission errors

− .02

.11

− .14

− .04

− .17

.01

.12

.14

–

10 KiTAP2 RT

− .29*

− .15

.24

.22

.25

.53**

.23

− .01

− .11

–

11 KiTAP2 RT SD

− .11

− .09

− .07

− .12

− .02

− .03

.20

.20

− .06

.14

–

12 KiTAP2 errors

− .16

− .25

− .04

− .06

− .07

− .09

.25

.26*

− .05

.09

.32*

–

13 KiTAP2 omission errors

− .18

− .18

.13

.04

.15

.02

.15

− .01

− .05

.07

.39*

.54**

–

14 KiTAP3 RT

− .33*

− .10

− .09

.03

.05

.58**

.32*

− .11

.03

.50**

.06

.09

.17

–

15 KiTAP3 RT SD

− .15

− .27*

.05

.04

.10

.35**

.32*

− .17

.04

.26*

.10

.17

.14

.44**

–

16 KiTAP3 errors

− .00

− .11

.23

.18

.22

− .01

.21

.30*

− .04

− .09

.01

.13

.06

− .01

.30*

–

17 KiTAP3 omission errors

− .26*

− .26*

.19

.20

.35**

.21

.51**

.15

.03

.23

.27*

.30*

.37**

.36**

.44**

.26*

–

18 Qb activity

.03

− .33*

− .02

.05

.01

.00

.04

.05

.11

.03

− .12

.06

.12

.20

.14

.23

− .04

–

19 Qb impulsivity

.01

− .30*

.15

.08

.21

− .26*

.11

.37**

− .09

− .10

.36**

.18

.10

− .20

− .00

.47**

.01

.18

–

20 Qb inattention

.27*

− .35**

.13

− .03

.12

.17

.23

− .02

.14

.25

.13

− .05

.19

.31*

.27*

.25*

.23

.41**

.22

–