Table 1.

Sex Differences in the Behavioral Economics of Nicotine Intake

			α		Q0		Pmax		Omax
Reinforcer	Day	K	Male	Female	Male	Female	Male	Female	Male	Female
Nic-0.03	1	1.6	0.000363 ± 0.000101	0.001118 ± 0.000331*	22 ± 1	28 ± 3	143 ± 37	42 ± 16*	852 ± 217	312 ± 123*
Nic-0.03	2	1.8	0.000332 ± 0.000076	0.001033 ± 0.000332*	24 ± 1	31 ± 4	118 ± 30	38 ± 16*	765 ± 179	301 ± 122*
Nic-0.01	1	2.7	0.000405 ± 0.000112	0.000442 ± 0.000125	33 ± 5	87 ± 52	48 ± 18	42 ± 12	474 ± 143	546 ± 211
Nic-0.01	2	2.7	0.000423 ± 0.000111	0.000510 ± 0.000132	36 ± 5	50 ± 11	33 ± 8	37 ± 13	355 ± 75	532 ± 225
FOOD	1	3.5	0.000024 ± 0.000005	0.000014 ± 0.000002	181 ± 17	179 ± 5	52 ± 11	70 ± 10	3100 ± 640	4277 ± 666
FOOD	2	3.5	0.000021 ± 0.000004	0.000016 ± 0.000003	177 ± 11	164 ± 4	50 ± 9	71 ± 12	2958 ± 519	3982 ± 695

*Significant difference from male rats (p < .05).