. Author manuscript; available in PMC: 2016 Apr 6.

Published in final edited form as: Child Neuropsychol. 2015 Jun 10;22(5):618–626. doi: 10.1080/09297049.2015.1044511

Table 1.

Demographic and clinical characteristics for the participants

	TD (n = 18)	ADHD (n = 26)
Age (years)	14.5 (1.4)	14.3 (2.3)
Female	13 (72%)	12 (46%)
IQ	116.4 (10.3)	114.0 (11.6)
Conners’ DSM Scores
Inattentive	44.3 (3.1)^*	80.1 (10.9)^*
Hyperactive-impulsive	44.9 (3.0)^*	67.1 (18.9)^*
Average PIM
Correct trials	6.4 (8.9)^*	17.3 (17.1)^*
Incorrect trials	6.8 (8.1)	12.4 (15.5)
Average ZCM
Correct trials	0.9 (1.0)^*	2.0 (1.5)^*
Incorrect trials	1.2 (1.2)^*	1.9 (1.5)^*

Note: TD = typically developing;

Groups were compared using Fisher’s exact test for gender and Wilcoxon two-sample test for age, IQ, and Conner’s scores. Differences between ADHD and controls in average PIM and ZCM were estimated from mixed-effects regression models fitted to squared-root transformed data and adjusted for gender.

p< .05 for TD vs. ADHD comparison.