Table 2.

Summary table of studies that have investigated the correlation between time perception and neuropsychological tasks.

References		TBI patients				Controls				Overall
										Time reproduction		Time production
										Simple	Concurrent	Simple	Concurrent
Perbal et al., 2003	RATIO
	Free tempo	NA				NA				ns	ns	0.46	0.41
	1 s tempo									ns	ns	0.36	0.64
	Speed of processing									ns	ns	ns	ns
	Working memory									−0.42	ns	ns	ns
	Episodic memory									ns	ns	ns	ns
	CV
	Free tempo									ns	ns	ns	ns
	1 s tempo									0.53	ns	ns	ns
	Speed of processing									−0.68	ns	0.46	ns
	Working memory									−0.50	−0.45	ns	ns
	Episodic memory									−0.50	ns	ns	ns
Schmitter-Edgecombe and Rueda, 2008		Verbal estimation								Verbal estimation
		No significant correlations when analyses were conducted separately between TBI patients and controls rs = −0.38 to 0.29								Visuo-spatial memory and (a) 60 s ratio score: r = 0.35; (b) 25-s absolute score: r = −37; and (c) 45-s absolute score r = −0.37
Anderson and Schmitter-Edgecombe, 2011		NA				Verbal estimation				NA
						Rey Auditory Verbal Learning Test with 45 s ratio r = 0.60; 7/24 with 45 s ratio r = 0.58
Mioni et al., 2012		Time reproduction				Time reproduction
	Working memory	0.53				0.44				NA
	Attention	ns				ns
Mioni et al., 2013a		Time Discrimination				Time Discrimination
		500 ms		1300 ms		500 ms		1300 ms		NA
	Working memory	−0.49		−0.62		ns		−0.52
	Attention	ns		−0.55		ns		−0.36
	Speed of processing	−0.38		−0.41		ns		−0.39
Mioni et al., 2013b										Time reproduction	Time production	Time Discrimination
	Attention
	Divided attention									0.46	ns	0.43
	Go-Nogo									0.48	ns	ns
	Working Memory
	N-Back	NA				NA				0.40	ns	ns
	Digit span backward									−0.41	ns	−0.43
	Executive Functions
	Verbal fluency									−0.51	ns	ns
	WCST									0.60	ns	−0.54

RATIO, relative error; CV, coefficient of variation; Simple, temporal task alone; Concurrent, temporal task + non-temporal task; NA, not available; ns, not significant.