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Table 5 Effect size (Cohen's d) for the main dependent variables

From: Response inhibition deficits in externalizing child psychiatric disorders: An ERP-study with the Stop-task

   Controls (N) AD/HD (A) AD/HD+ODD/CD (AO) ODD/CD (O)
Measure   effect-size d sc a effect-size d sc a effect-size d sc a effect-size d sc a
Stop-failure reaction-time (ms) A -1.26*    
  AO -1.22* .03   
  O -.87* .39 .36  
SSRT at 250 ms SSD (ms) A -.91*    
  AO .06 .96*   
  O -1.08* -.18 -1.13*  
Go-Trial ROIb mean amplitude (μV) A -.29    
  AO -.57 -.28   
  O -.60 -.31 -.02  
Stop-Trial ROIb mean amplitude (μV) A -1.16*    
  AO -.93* .22   
  O -1.15* .01 -.20  
Stop-N200 ROIb mean amplitude (μV) A -1.15*    
  AO -.66 .49   
  O -.89+ .26 -.22  
  1. a dsc is the standardized mean difference for the sample, based on the ANCOVA model with age as covariate. This is done in order to account for developmental effects.
  2. b Region of interest, mean of electrodes F4 and F8 at 420-500 ms post Go-signal onset
  3. * one-tailed, P < 0.05
  4. + one-tailed, P < 0.10