Table 8.

Comparison of mean latencies in single-task vs. dual-task conditions for eye and pointing movements and for biceps activity in trials where no stop signal was presented.

	Eyes			Hands			Biceps
	Mean RT (ms):		U-test	Mean RT (ms):		U-test	Mean RT (ms):			U-test
	Single	Dual	p(2-tailed)	Single	Dual	p(2-tailed)	Single	Dual		p(2-tailed)
CS	294.4 > 289.6		0.001	344.5 < 345.9		n.s.	306.3 < 308.1			n.s.
DS	243.9 < 249.1		n.s.	320.3 < 326.0		<0.001	265.7 < 272.8			<0.001
EH	242.6 < 257.2		<0.001	331.0 < 331.4		n.s.	263.2 < 264.2			n.s.
IM	238.1 < 242.7		<0.001	358.9 > 357.8		n.s.	298.1 > 293.8			n.s.
IW	263.2 < 280.0		<0.001	315.5 > 314.6		n.s.	259.3 < 261.0			0.004
SW	293.7 > 289.5		n.s.	374.3 > 371.7		n.s.	323.1 > 319.7			n.s.
	Mean RT (ms):		T-test	Mean RT (ms):		T-test	Mean RT (ms):			T-test
	Single	Dual	p(2-tailed)	Single	Dual	p(2-tailed)	Single	Dual		p(2-tailed)
GM	262.7 < 268.0		n.s.	340.8 < 341.2		n.s.	286.0 < 286.6			n.s.

Marked in bold are the values, where participants responded significantly faster in the single-task than in the dual-task condition.