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. Author manuscript; available in PMC: 2019 Jul 31.
Published in final edited form as: Neuropsychology. 2019 Apr 4;33(4):470–481. doi: 10.1037/neu0000546

Table 1.

Descriptive Statistics.

Demographics ADHD (N =43) Non-ADHD (N = 34) χ2(4, N=77) p Phi
Gender (Boys/Girls) 25/18 20/14 .004 .95 .007
Ethnicity (AA/A/C/H/M) 5/0/32/3/3 4/3/19/7/1 11.13 .09 .38
M(SD) M(SD) t(75) p Cohen’s d

Age 10.26(1.51) 10.71(1.56) 1.27 .21 0.29
SES 46.71(11.65) 51.59(11.48) 1.84 .07 0.42
VCI (IQ) 102.67(14.16) 109.21(10.30) 2.26 .03* 0.53
BASC-2/3 Attention Problems
Teacher 63.49(8.69) 52.62(10.76) −4.91 < .001* 1.13
Parent 65.98(7.10) 56.47(11.46) −4.46 < .001* 1.03
BASC-2/3 Hyperactive Problems
Teacher 62.62(15.16) 54.15(12.75) −2.60 .01* 0.60
Parent 68.00(13.46) 54.62(11.40) −4.63 < .001* 1.06
Mean RT (seconds)
Global-Global 2.20(0.73) 2.09(0.78) −0.65 .52 0.15
Local-Local 2.26(0.75) 1.84(0.41) −3.00 .004* 0.69
Global-Local 3.49(1.23) 3.09(0.78) −1.65 .10 0.38
Mean Errors
Global-Global 0.47(0.62) 0.58(1.00) 0.59 .56 0.13
Local-Local 1.77(1.24) 1.46(0.68) −1.34 .19 0.31
Global-Local 4.38(3.13) 2.86(1.79) −2.53 .01* 0.60

Note. AA = African American, A = Asian, BASC = Behavior Assessment System for Children, C = Caucasian Non-Hispanic, H = Hispanic English-speaking, M = Multiracial, SES = Social economic status, VCI (IQ) = Verbal Comprehension Index (Intelligence Quotient). RT = Reaction Time.