Table 2.

Comparison of individuals with insomnia and controls on tasks of inhibitory control.

Author (year)	n Insomnia; controls	Task	Outcome	Group difference	Group differences TST	Group difference SEI
Backhaus et al., 2006	15; 13	Go/no-go	Response times	X	p < 0.05	p < 0.05
			Number of correct responses	X
Covassin et al., 2011	8; 8	Stop-Signal task	Go reaction times	X	p < 0.05	p < 0.05
			Stop reaction times	p < 0.05
			Accuracy	X
			Errors	X
Crenshaw and Edinger, 1999	32; 32	Continuous performance task	Response latency	X	X	X
Edinger et al., 2000	27; 31	Continuous performance task	Response latency	X	X	p < 0.05
Edinger et al., 2008	79; 84	Continuous performance task	Response latency	X	X	p < 0.05
Fortier-Brochu and Morin, 2014	25; 16	Continuous performance task II	Perseverative errors	p < 0.05	p < 0.05	p < 0.05
Haimov et al., 2008	35; 64	Stroop	Response times	p < 0.05	n/a	p < 0.05
Joo et al., 2013	27; 27	Stroop	Response times	p < 0.05	p < 0.05	p < 0.05
Liu et al., 2014	36; 26	Attention network test	Response times (executive control)	p < 0.05	p < 0.05	p < 0.05
Perrier et al., 2015	21; 16	Attention network test	Response times (executive control)	X	X	p < 0.05
			Response times*	p < 0.05
Sagaspe et al., 2007	13; 13	Stop-signal task	Go reaction times	X	n/a	n/a
			Stop reaction times	X
			Accuracy	X
			Errors	X
Siversten et al., 2013	30; 91	Color-word interference task	Response times	X	n/a	n/a
Szelenberger and Niemcewicz, 2001	14; 14	Continuous attention task	Response times	X	n/a	n/a
			Omission errors	X
			Commission errors	X

Significant differences between groups are shown as p < 0.05. No group differences are shown as X.

^*Response times in incongruent compared to congruent and neutral Flankers.