Table 4.

Mean (standard error) percentages of errors across conditions and trials.

	First trial	Second trial	Third trial
P-S cuing	(Set shift)	(First set repetition)
Task (2 tasks)	3.91 (1.09)	1.17 (0.48)	0.78 (0.61)
Task (3 tasks)	4.69 (1.31)	0.76 (0.44)	0.98 (0.47)
Transition (2 tasks)	6.35 (1.55)	2.34 (1.19)	1.36 (0.57)
Transition (3 tasks)	49.61 (3.00)	5.27 (1.09)	1.37 (0.64)
F-B cuing		(Set shift)	(First set repetition)
Task (2 tasks)	96.48 (2.50)	3.52 (1.24)	1.37 (0.49)
Task (3 tasks)	98.83 (0.39)	5.27 (1.50)	2.73 (0.85)
Transition (2 tasks)	96.68 (1.79)	3.13 (1.31)	3.13 (0.90)
Transition (3 tasks)	99.22 (0.35)	45.51 (2.17)	3.71 (0.96)

The table shows the initial three trials of task runs.