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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

From: Assessing ADHD symptoms in children and adults: evaluating the role of objective measures

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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
  1. CP Conners’ parents scale, HY/Imp hyperactivity/impulsivity, KiTAP1 Go/Nogo task of the test battery of attention for children, KiTAP2 selective attention task, KiTAP3 sustained attention task, RT reaction time in ms, SD standard deviation
  2. * p < .05 level (two-tailed) ** p < .01 level (two-tailed)