. Author manuscript; available in PMC: 2011 Feb 1.

Published in final edited form as: J Math Psychol. 2010 Feb 1;54(1):5–13. doi: 10.1016/j.jmp.2008.10.002

Table 1.

Participant demographics

	N	% Female	Age	Education

Control	49	49.0	33.6 (10.9)	14.4 (2.2)
Substance Dependent	39	56.4	34.1 (10.3)	12.5 (1.8)
Stimulant	22	68.2	30.3 (7.2)	12.3 (1.5)
Alcohol	16	37.5	39.9 (11.6)	12.9 (2.2)

Note. For Age and Education, the mean is shown with standard deviation in parentheses. “Stimulant” and “Alcohol” are drug preference subsets of the Substance Dependent group. Note that one individual did not report drug preference.