. 2013 Oct 24;4:783. doi: 10.3389/fpsyg.2013.00783

Table 2.

Bivariate (below the diagonal) correlation coefficients for all observed variables and partial (above the diagonal) correlation coefficients between individual markers of the ANS (internal Weber fractions [w comparison] and mean reaction times [RT comparison] in the non-symbolic numerical comparison task) and addition performance within and across the respective years (processing speed [proc. speed]; reaction times, omission, and commission errors in the inhibitory control task [RT inhib., ER om. inhib., ER com. inhib.]).

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
1. Addition first year	–		−0.39^*	0.18^a	−0.01	−0.33^a ^**
2. Addition second year	0.75 ^**	–	−0.02	0.08^a	−0.10	−0.30^a ^*
3. w comparison first year	−0.39^*	−0.27^*	–
4. w comparison second year	0.03	0.03	0.15	–
5. RT comparison first year	−0.15	−0.17	−0.10	0.16	–
6. RT comparison second year	−0.38^**	−0.31^*	0.20	0.03	0.54^**	–
7. proc. Speed first year	−0.32^**	−0.25^*	0.15	0.08	0.26^*	0.27^*	–
8. proc. speed second year	−0.28^*	−0.18	0.19	0.27^*	0.08	0.29^*	0.26^*	–
9. RT inhib. first year	−0.30^*	−0.20	0.15	0.12	0.31^*	0.35^**	0.42^**	0.23	–
10. RT inhib. second year	−0.26^*	−0.19	0.23	0.13	0.30^*	0.47^**	0.17	0.56^**	0.36^**	–
11. ER com. inhib. first year	0.03	0.01	0.07	0.13	−0.33^*	−0.30^*	−0.15	0.07	−0.31^*	−0.16	–
12. ER com. inhib. second year	0.01	0.07	0.01	0.31^*	−0.16	−0.18	0.19	−0.07	0.01	−0.36^**	0.26^*	–
13. ER om. inhib. first year	−0.31^*	−0.21	0.28^*	0.20	0.38^**	0.35^**	0.61^**	0.23	0.49^**	0.30^*	−0.04	0.04	–
14. ER om. inhib. second year	−0.19	−0.07	0.33^**	0.31^*	0.18	0.27^*	0.31^*	0.51^**	0.29^*	0.28^*	0.06	0.11	0.48^*	–
15. Reasoning second year	0.40^**	−0.44^**	−0.01	−0.01	−0.12	−0.09	−0.22	−0.31^*	−0.26^*	−0.20	−0.14	0.03	−0.25^*	−0.18	–

n = 67;

n = 66;

p < 0.05 (two-sided);

^**

p < 0.01 (two-sided).