Table 3.

Average DMTS accuracy and VI response rates during baseline and disruption in Experiment 3, average proportions of baseline in each of four resistance tests, and results of two-tailed t-tests (3df) of differences in proportion of baseline between SO and DO components. The magnitude of the DOE – the difference between accuracy levels in DO and SO components – is shown in a separate column. Response rate data are given only for conditions in which disruptors were effective (prefeeding and extinction). Also shown are rates of pecking at samples S₁ and S₂ in the SO and DO components.

	DMTS accuracy -- log d			VI responses/min		Sample pecking -- resp/min
Prefeeding
	SO	DO	DOE	SO	DO	SO S1	SO S2	DO S1	DO S2
Baseline	1.386	1.804	0.418	109.4	120.3	60.0	69.2	63.0	46.6
Disrupt	1.004	1.294	0.289	61.4	74.9	59.4	61.8	63.9	44.3
Prop. BL	0.726	0.711		0.589	0.618
t-test results	t = 0.27, p = .800			t = 0.80, p = .480
Sample disruption
	SO	DO				SO S1	SO S2	DO S1	DO S2
Baseline	1.381	1.874	0.492			56.6	63.7	59.4	40.0
Disrupt	1.143	1.497	0.354			51.5	60.7	52.8	39.0
Prop. BL	0.880	0.814
t-test results	t = 0.61, p = .584
Retention interval disruption
	SO	DO				SO S1	SO S2	DO S1	DO S2
Baseline	1.381	1.874	0.492			53.4	62.5	56.4	37.8
Disrupt	1.089	1.412	0.323			53.2	60.4	57.7	37.9
Prop. BL	0.790	0.759
t-test results	t = 0.41, p = .708
Extinction
	SO	DO		SO	DO	SO S1	SO S2	DO S1	DO S2
Baseline	1.316	1.874	0.557	110.5	125.0	54.3	58.2	56.9	36.6
Disrupt	0.888	1.053	0.165	81.4	99.3	60.8	63.5	63.2	42.0
Prop. BL	0.667	0.572		0.771	0.831
t-test results	t = 0.85, p = .458			t = 1.41, p = .253