Table 1.

Comparison of the two samples included in the study

	ADHD Study	Alcoholism Study
N	193	448
Recruitment method	Advertisements	Agreement with courts; Canvassing
Clinical Interview	SCID	DIS
ADHD Evaluation	Modified KSAD	DIS-IV Lifetime Form
IQ	WAIS-III short form	WAIS-R short form
Age at evaluation	18–40	26–66
% Male	51%	48%
GAF mean (st.dev)	78.7 (9.3)	69.3 (7.6)
EF measures
Set shifting	Trailmaking B	Trailmaking B
Interference control	Stroop CW	Stroop CW
Flexibility	WCST-64	WCST-64
Response inhibition	Stop task	Stop task
Speed measures	Trails A	Trails A
	Stroop C,W	Stroop C,W
	Go RT	Go RT

Note:

Stroop C,W=Stroop color naming and Stroop word naming condition, with the interference condition score partialed. Trails A=Trailmaking A, with the interference condition (B) partialed. Go RT=go trial reaction time on the stop-go task.