Table 3. Normalized demand curve parameters, and the normalized FR value (P_max) at which peak normalized response output (O_max) is predicted to occur.

Subject	Reinforcer	b	a	R2	Pmax	Omax
G1	Food	−0.0005	−0.0023	0.81	443.0	16250
	Fat	−0.1839	−0.0031	0.81	258.7	4118
P1	Food	0.0760	−0.0026	0.56	419.1	22609
	Fat	−0.1061	−0.0084	0.84	106.5	2655
B2	Food	0.0565	−0.0032	0.84	330.3	15935
	Fat	−0.1903	−0.0016	0.88	502.6	6848
R2	Food	−0.0908	−0.0010	0.56	924.3	20034
	Fat	−0.2355	−0.0013	0.79	565.4	5918
B3	Food	−0.0042	0.0094	0.69	105.8	3832
	Fat	−0.2578	−0.0104	0.88	71.2	1128
B4	Food	−0.0302	−0.0067	0.87	145.5	4748
	Fat	−0.3352	−0.0070	0.76	94.4	1058
Group	Food	0.0228	−0.0038	0.87	270.9	11065
	Fat	−0.2165	−0.0034	0.94	229.8	3234