Appendix D.

Absolute individual and group inactive lever presses at each unit dose. Each value is the mean of three sessions

Subject	Unit dose (mg/kg/infusion)
	0.06	0.03	0.02	0.01	0.007	0.004	0.002	0.001	0.0005	0.00025	Saline
Males
1	0.3	2.7	1.0	4.3	10.7	5.7	4.0				2.7
2	1.3	4.3	2.7	2.0	0.3	1.0	1.0				0.7
3	7.0	4.0	8.0	5.0	1.7	1.3	2.7				2.3
4	13.3	5.7	5.7	4.3	3.7	2.7	0.3	0.3			2.3
5	0.0	3.0	1.7	6.7	14.0	14.7	14.3	7.3	4.3	4.7	3.7
6	11.3	9.0	5.7	9.3	8.3	5.3	3.7	2.7			5.7
7	6.0	2.7	6.7	15.3	9.0	6.7	2.0				6.0
Group mean	5.6	4.5	4.5	6.7	6.8	5.3	4.0	3.4	4.3	4.7	3.3
SEM	2.0	0.9	1.0	1.7	1.9	1.8	1.8	2.1	NA	NA	0.7
Females
1	40.0	38.0	34.0	22.7	7.3	7.0					6.7
2	0.7	2.3	1.3	1.0	1.3	0.3					0.0
3	8.0	7.3	24.0	16.0	32.0	31.7	12.3				10.7
4	10.0	20.7	22.3	16.0	25.0	19.3	7.3				8.7
5	0.0	0.0	18.0	12.7	4.0	1.0	0.0	0.0	0.7		1.0
6	3.0	1.0	5.0	6.3	8.0	4.7	6.7	2.0	0.7		3.3
7	4.3	9.0	9.3	9.3	7.0	3.0	0.7	1.7			4.7
Group mean	9.429	11.186	16.271	12.000	12.086	9.571	5.400	1.233	0.700		5.0
SEM	5.277	5.204	4.400	2.707	4.393	4.411	2.282	0.623	0.000		1.5