Table 1.

Correlations Among Executive Function Tasks During Sleep Deprivation Phase (Below Diagonal) and Post-Recovery Phase (Above Diagonal)

	TOL No. Moves	TOL Pickup Time	TOH No. Moves	TOH Pickup Time	WCST No. Errors	WCST No. PE	WCST No. Cat
TOL No. Moves	–	−0.47**	−0.54**	−0.10
TOL Pickup Time	−0.19	–	0.07	0.11
TOH No. Moves	0.38*	−0.03	–	−0.27
TOH Pickup Time	−0.02	0.02	−0.07	–
WCST No. Errors	0.40**	−0.03	0.19	0.16	–
WCST No. PE	−0.21	0.16	0.07	−0.07	−0.61	–
WCST No. Cat	−0.39**	0.12	−0.15	0.13	−0.87**	0.52**	–

Note.

^*P < 0.05,

^**P < 0.01.

TOL = Tower of London; TOH = Tower of Hanoi; WCST = Wisconsin Card Sorting Test; PE = Perseverative Errors; Cat = Categories Completed