Table 3.

Obtained delay of reinforcement per lever and overall rate of reinforcement for each rat and each FT schedule. The data are averages over the last five sessions.

Rat	FT value	Obtained reinforcement delay (s)							Reinforcement rate (reinf/min)
		Levers
		1	2	3	4	5	6	7
1	0	–	13.0	13.7	0.0	23.4	12.0	14.2	1.7
2	0	14.7	23.0	19.7	0.0	20.9	24.8	19.6	1.7
3	0	19.7	12.3	18.9	0.0	18.2	26.4	37.7	1.7
4	1	26.1	14.9	7.2	0.9	11.0	21.4	16.7	1.4
5	1	15.2	13.1	6.7	0.9	15.9	20.8	21.9	1.5
6	1	11.9	9.8	13.2	1.0	18.1	33.3	22.3	1.7
7	2	18.7	14.2	6.1	1.5	14.5	14.4	19.8	1.5
8	2	–	22.7	9.5	1.2	21.8	20.8	20.4	1.4
9	2	0.8	7.2	72.2	1.9	19.4	16.9	11.9	1.5
10	4	25.7	32.9	23.5	3.4	24.3	31.9	32.2	1.0
11	4	6.6	17.6	10.2	2.9	24.9	22.9	32.7	1.6
12	4	23.1	22.4	19.5	3.3	24.2	34.0	19.1	1.1
13	8	12.0	5.9	8.6	5.6	9.7	18.0	20.3	1.3
14	8	15.3	15.7	6.6	6.2	28.4	13.8	10.0	0.7
15	8	–	34.5	–	5.4	17.1	30.8	–	1.3
16	16	23.9	28.8	20.3	13.0	21.8	30.1	30.5	0.6
17	16	140.0	59.9	37.2	15.1	45.8	35.1	69.5	0.4
18	16	189.9	272.9	332.3	15.7	169.0	313.6	303.2	0.1
19	32	116.9	82.7	141.5	25.2	26.9	155.8	151.5	0.2
20	32	82.7	643.1	251.2	29.9	1225.7	1102.1	1291.2	0.0
21	32	33.0	29.9	45.4	25.3	45.1	34.1	32.2	0.4