. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Pers Individ Dif. 2014 Jul 1;64:58–61. doi: 10.1016/j.paid.2014.02.018

Table 1.

Descriptive Statistics on Sample

	ADHD n=61	non-ADHD n=48
Age	4.49(1.01)	4.15(1.15)
Sex (n; % Male)	40(65.6)	24(50)
Ethnic Minority	27(44.2)	9(18.8)^*
Income (mode; see below)	0	2,5
Inattention T1	4.80(2.65)	1.77(2.31)^**
Hyper-Imp T1	7.3(1.84)	2.94(2.31)^**
Inattention T2	5.36(3.21)	3(2.78)^**
Hyper-Imp T2	6.52(2.7)	3.34(2.64)^**
Negative Affect	4.68(.93)	3.69(.81)^**
Surgency	4.96(1.02)	4.5(.84)^*
Effortful Control	4.69(.87)	5.07(.87)^*

Note.

p<.05.

^**

p<.01 based on chi-square or ANOVA/MANOVA.

Family income modes: 0=annual income less than $20,000, 1=between $20,000 and $40,000, 2=between $40,000 and $60,000, 3=between $60,000 and $80,000, 4=between $80,000 and $100,000, and 5=over $100,000 annually. T1=Initial time point. T2= One-year longitudinal time point.