Table 2.

Average DMTS accuracy during baseline and disruption in Experiment 2, average proportions of baseline in each of three resistance tests, and results of one-tailed t-tests (3df) of differences in proportion of baseline between SO and DO components with significant differences in boldface. The magnitude of the DOE – the difference between accuracy levels in DO and SO components – is shown in a separate column. Also shown are rates of pecking at samples S₁ and S₂ in the SO and DO components.

Accuracy of discrimination -- log d				Sample pecking -- resp/min
Comparison disruption				Comparison disruption
	SO	DO	DOE	SO S1	SO S2	DO S1	DO S2
Baseline	1.253	1.768	0.515	57.2	65.6	59.1	43.8
Disrupt	1.166	1.315	0.149	61.2	70.5	60.7	43.5
Prop. BL	0.944	0.748
t-test results	t = 2.28, p = .054
Retention interval disruption				Retention interval disruption
	SO	DO		SO S1	SO S2	DO S1	DO S2
Baseline	1.404	1.689	0.285	58.6	70.3	60.7	40.1
Disrupt	1.075	1.159	0.084	58.1	68.7	57.7	45.6
Prop. BL	0.808	0.677
t-test results	t = 1.15, p = .167
Sample disruption				Sample disruption
	SO	DO		SO S1	SO S2	DO S1	DO S2
Baseline	1.410	1.896	0.486	62.2	59.3	63.9	43.3
Disrupt	1.435	1.592	0.157	47.3	51.1	47.0	27.5
Prop. BL	1.032	0.845
t-test results	t = 2.83, p = .033