Table 2.

Zero-order correlation coefficients between the indices of self-control (NAS-50, NAS-40, SCS, C), general fluid intelligence (TAO, RAPM), and executive functions (CATT, COUNT, SST, N-BACK correct, N-BACK lures).

Variable	NAS-40	SCS	C NEO-FFI	TAO	RAPM	CATT (Errors)	COUNT (Errors)	SST (Ssrt)	N-BACK (Correct)	N-BACK (Lures)
NAS-50	0.290∗∗	0.759∗∗	0.726∗∗	-0.020	0.038	-0.010	0.041	0.013	0.022	0.042
NAS-40		0.303∗∗	0.285∗∗	0.078	0.096	-0.128*	-0.044	-0.061	0.026	-0.097
SCS			0.682∗∗	-0.024	0.022	-0.031	-0.009	-0.079	0.065	-0.030
C NEO-FFI				-0.097	-0.044	0.027	0.115*	-0.071	-0.063	0.021
TAO					0.551**	-0.302**	-0.247**	-0.202**	0.310**	-0.235**
RAPM						-0.270**	-0.275**	-0.116*	0.311**	-0.27**
CATT (errors)							0.233**	0.145**	-0.354**	0.142*
COUNT (errors)								0.069	-0.311**	0.158**
SST (Ssrt)									-0.160**	0.113
										p = 0.051
N-BACK (correct)										-0.255**

NAS-50, Self-control questionnaire, self-report version (Nęcka et al., 2016). NAS-40, Self-control questionnaire, informant version (Nęcka et al., 2016). SCS, Self-Control Scale (Tangney et al., 2004). C (NEO-FFI), Conscientiousness from the NEO-FFI questionnaire. TAO, Analogical Reasoning Test. RAPM, Raven’s Advanced Progressive Matrices. CATT (errors), Task switching, DV – the overall number of errors. COUNT (errors), Mental counters procedure, DV – the overall number of errors. SST (ssrt), Stop signal task, DV – stop signal reaction time. N-BACK (correct), Figural n-back task, DV – number of correct responses (n = 2). N-BACK (lures), Figural n-back task, DV – number of erroneous responses to lures (n = 1 or n = 3). ^∗p < 0.05 (two-tailed). ^∗∗p < 0.01 (two-tailed).