Table 1.

Model parameter estimates and variance accounted for by applying the reinforcer demand model to the nicotine and saline data from all 16 rats

Rat #	Saline					Nicotine
	Q0	a	Pmax	Omax	R2	Q0	a	Pmax	Omax	R2
7256	22.6	0.00276	5.9	39.6	0.958	52.4	0.00036	17.7	276.6	0.956
7257	28.1	0.00663	2.0	16.5	0.899	33.0	0.00056	19.9	195.7	0.950
7258	18.5	0.00326	6.0	33.3	0.938	25.9	0.00068	20.7	160.5	0.929
7259	14.6	0.00229	12.1	51.5	0.876	37.0	0.00039	27.9	301.2	0.895
7260	10.9	0.00497	7.2	23.2	0.942	20.6	0.00084	22.6	136.6	0.629
7261	30.6	0.00360	2.8	26.6	0.913	39.9	0.00075	10.3	127.4	0.719
7262	36.9	0.00129	5.9	68.9	0.901	50.7	0.00040	14.0	224.6	0.939
7263	14.8	0.00673	3.7	16.3	0.983	48.1	0.00129	6.0	85.1	0.883
7264	48.0	0.00177	3.8	56.4	0.926	50.6	0.00036	18.2	281.1	0.973
7265	24.2	0.00391	3.4	25.2	0.955	45.3	0.00059	12.0	167.6	0.982
7266	18.5	0.00216	10.3	55.2	0.955	30.8	0.00022	59.8	534.8	0.484
7267	22.1	0.00265	6.0	39.8	0.772	37.9	0.00050	18.3	209.1	0.963
7268	28.2	0.00401	2.9	25.0	0.957	49.6	0.00044	15.0	227.1	0.943
7269	38.3	0.00240	3.3	38.9	0.953	47.3	0.00047	13.5	198.9	0.935
7270	51.3	0.00196	2.7	44.3	0.981	49.6	0.00042	13.1	206.1	0.981
7271	21.4	0.00620	2.6	16.8	0.950	33.6	0.00091	11.3	114.8	0.990