. Author manuscript; available in PMC: 2013 Apr 1.

Published in final edited form as: Behav Res Ther. 2012 Jan 25;50(4):231–239. doi: 10.1016/j.brat.2012.01.003

Table 1.

Demographic Characteristics of the Study Sample

	High BAS (N = 99)	Moderate BAS (N = 75)	t / χ²
Age	18.15 (1.58)	17.99 (1.56)	0.57
Sex	62.3% Female	72.0% Female	1.69
Race	55.6% Caucasian	47.2% Caucasian	0.64
	21.2% African American	36.1% African American
	14.1% Asian/Pacific Islander	13.9% Asian/Pacific Islander
	2.0% Biracial	0.0% Biracial
	4.0% Other	4.7% Other
Ethnicity	8.1% Hispanic/Latino	5.6% Hispanic/Latino	0.64
BIS	20.01 (4.17)	19.46 (2.90)	1.02
BAS-Total	46.00 (2.73)	38.13 (0.87)	25.98^***
BAS-Drive	13.36 (1.72)	10.40 (1.39)	12.42^***
BAS-Fun	13.90 (1.56)	11.29 (1.61)	10.71^***
BAS-Reward	18.70 (1.17)	16.44 (1.51)	10.75^***
SPSRQ-SR	8.47 (1.21)	5.08 (1.47)	15.98^***
ASRM (Time 1)	6.60 (4.11)	5.11 (3.35)	2.63^**
ASRM (Follow- up)	5.90 (3.95)	3.95 (3.43)	3.48^**

p < .05;

^**

p < .01;

^***

p < .001.

Note. Standard deviations are in parentheses. BIS = Behavioral Inhibition System scores from the BIS/BAS Scales; BAS-T = Behavioral Approach System – Total scores from the BIS/BAS Scales; SPSRQ-SP = Sensitivity to Punishment and Sensitivity to Reward Questionnaire - Sensitivity to Punishment Subscale; SPSRQ-SR = Sensitivity to Punishment and Sensitivity to Reward Questionnaire - Sensitivity to Reward Subscale; BDI = Beck Depression Inventory; ASRM = Altman Self-Rating Mania Scale.