Table 2. a. Behavioral Data, Ordered SART.

± symbols represent the standard error of the mean.

Measure	Drug	Ordered Silent	Ordered Noise
% Errors of Commission	Placebo	5.66 ± 1.31	5.45 ± 1.50
	Nicotine	5.64 ± 1.59	5.68 ± 1.78
% Errors of Omission	Placebo	1.60 ± 0.71	2.49 ± 0.90
	Nicotine	2.02 ± 0.97	3.45 ± 1.31
Reaction Time	Placebo	433 ± 24.0	447 ± 24.1
	Nicotine	425 ± 24.3	441 ± 26.0

b. Behavioral Data, Random SART. ± symbols represent the standard error of the mean.
Measure	Drug	Random Silent	Random Noise
% Errors of Commission	Placebo	16.8 ± 3.45	19.5 ± 4.76
	Nicotine	15.3 ± 2.61	19.5 ± 3.72
% Errors of Omission	Placebo	0.875 ± 0.250	4.14 ± 0.91
	Nicotine	1.19 ± 0.45	5.33 ± 2.00
Reaction Time	Placebo	540 ± 16.2	559 ± 17.9
	Nicotine	543 ± 19.0	563 ± 20.7