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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Drug Alcohol Depend. 2011 Mar 3;117(2-3):198–203. doi: 10.1016/j.drugalcdep.2011.02.001

Table 1.

Participant Characteristics

FHAP− FHAP+
n = 36 n = 36
Characteristics Mean ± SD Mean ± SD
Age 27.3 ± 4.8 26.9 ± 4.7
WASI Total IQ score 98.4 ± 12.6 100.8 ± 12.6
FFISS 34.3 ± 11.1 35.6 ± 10.1
BIS-11 attentional 14.2 ± 3.4 14.6 ± 2.9
BIS-11 motor 23.3 ± 3.8 22.8 ± 3.1
BIS-11 nonplanning 21.5 ± 4.7 23.9 ± 6.2
Gender
Male 21 (68%) 20 (66%)
Female 15 (42%) 16 (44%)
Ethnicity
African-American 7 (19%) 10 (28%)
Caucasian 12 (33%) 11 (31%)
Hispanic 14 (39%) 13 (36%)
Other 3 (8%) 2 (6%)

WASI = Wechsler Abbreviated Scale of Intelligence; FFIS = Four Factor Index of Socioeconomic Status; BIS-11 = Barratt Impulsiveness Scale version 11