Table 1.
ADHD (n = 27) | Word Reading-matched Controls (n= 27) |
|
---|---|---|
Group Defining Variables | ||
ADHD Symptoms | 11.89 (3.53) | 1.26*** (1.79) |
Inattention | 7.41 (1.60) | .89*** (1.31) |
Hyp/Imp | 4.48 (3.23) | .37*** (.97) |
Word Reading z-score | −.64 (.91) | -.68 (.93) |
Demographics | ||
Age | 9.78 (.35) | 9.89 (.55) |
Gender (% female) | 33.3 | 81.5*** |
Father’s education (years) | 14.69 (2.45) | 15.67 (2.43) |
Mother’s education (years) | 14.78 (2.49) | 15.04 (2.41) |
Ethnicity (% Caucasian) | 90.0 | 96.3 |
Comorbid Diagnosis (% diagnosed) | ||
Oppositional Defiant Disorder | 48.1 | 3.7*** |
Conduct Disorder | 28.0 | 3.7* |
Generalized Anxiety Disorder | 15.4 | 7.7 |
Major Depression | 18.5 | 7.4 |
Cognitive Variables | ||
Inhibition | −.39 (1.10) | .26* (.91) |
Verbal Processing Speed | −.35 (.61) | .00 (.77) |
Motor Processing Speed | −.29 (.55) | .08 (.67) |
Working Memory | −.31 (.59) | .00 (.78) |
Full Scale IQ | 105.78(8.79) | 106.96 (11.36) |
Verbal IQ | 108.96 (11.45) | 110.00 (13.83) |
Performance IQ | 101.22 (10.14) | 102.56 (9.69) |
Note. Asterisks indicate the statistical significance of group differences:
p < .05,
p < .01,
p < .001. Except where noted, means (with standard deviations) are presented.