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Table 2 Go/Nogo-Task Performance (Boys only)

From: Normal response inhibition in boys with Tourette syndrome

Measure

Healthy

Comparison

N = 15

Tourette

Syndrome

N = 20

repeated measure ANOVA

(Sidak-adjusted Post-hoc tests)a

 

Mean (SD)

Mean (SD)

 

Success rate (%) b

  

Letter: F(2,66) = 247.3**, (X > B**, A > B**)

   Go (X)c

98 (1.8)

97 (2.1)

 

   Go (A)d

98 (2.1)

98 (2.4)

 

   Nogo (B)e

61 (17.1)

60 (11.7)

 

Reaction time of correct

responses (ms) b

  

Letter: F(1,33) = 66.8**, (A > X**)

   Go (X)

401 (106)

378 (44)

 

   Go (A)

438 (106)

403 (59)

 

Reaction-time of errors compared to correct

Go (A) (ms) f

  

Letter: F(1,33) = 10.8**, (A > B**)

   Correct Go (A)

434 (106)

404 (59)

 

   Error in Nogo (B)

372 (203)

347 (87)

 

Reaction-time variability (ms)

  

Letter: F(1,33) = 13.2**, (A > B**)

   Go (X)

109 (34)

118 (35)

Run*Group: F(2,66) = 2.8+

   Go (A)

137 (39)

133 (49)

Run*Letter: F(2,66) = 3.2*

  1. a only effects with p < .10 are reported
  2. b marginal means across runs and standard deviations of factor "Group"
  3. c Go (X) was frequent (4/6 of all trials)
  4. d Go (A) was infrequent (1/6 of all trials)
  5. e Nogo (B) was infrequent (1/6 of all trials)
  6. f reaction-times of all three runs collapsed into a grand mean, thus slight differences to the marginal means reported for analysis of 'Reaction time of correct responses (ms)' emerge.
  7. + p < .1
  8. ** p < .01