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Table 1 Performance Data

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

   Group    
   Controls (N) N = 11 AD/HD (A) N = 10 AD/HD+ODD/CD (AO) N = 11 ODD/CD (O) N = 8 ANCOVA (covariate "age")  
Measure   Mean (SD) Mean (SD) Mean (SD) Mean (SD) F (3,35) p Planned contrasts
Go-reaction-time (ms) 598 (81.6) 583 (46.2) 594 (52.7) 649 (109.9) 1.97 .14  
SD of Go-reaction- time 161 (43.2) 157.6 (28.4) 155.5 (25.6) 188.5 (49.7) 1.76 .17  
Percentage of correct Go-trials 88.4 (.08) 82.8 (.09) 79.9 (.11) 84.0 (.08) 1.43 .25  
Stop-failure reaction-time (ms) 450 (37.6) 492 (50.5) 502 (50.2) 477 (57.5) 3.70* .02 N < A*, AO*, O*/A = AO = O
SSRT at 250 ms SSD (ms) 245 (33.9) 272 (47.4) 256 (53.1) 274 (49.8) 3.41* .03 N < A*, O*/N = AO/AO < A*, O*
Inhibition-function (percentage of Stop failures) 100 ms SSD 3.9 (5.5) 11.0 (9.9) 9.1 (9.9) 5.8 (5.0) Group: F(3,35) = 1.50, p = .21  
  250 ms SSD 30.0 (11.1) 40.3 (16.1) 29.9 (9.6) 27.9 (13.2)    
  700 ms SSD 88.8 (12.0) 89.8 (7.0) 90.8 (6.3) 84.3 (12.5) Group*SSD: F(6,70) = 1.61, ε = .95, p = .16  
  1. * one-tailed, p < .05