TABLE 2.

Pearson correlation coefficients between fine motor skills, finger-based number representations, numerical skills, and control variables.

		1	2	3	4	5	6	7	8
1	Dexterity	–	0.199	0.244*	0.286*	0.268*	−0.075	0.187	0.371**
2	Graphomotor skill	0.207	–	0.018	0.041	0.003	0.001	0.148	−0.007
3	Ordinal finger-based representation	0.150	−0.150	–	0.816**	0.494**	0.146	0.359**	0.317**
4	Cardinal finger-based representation	0.185	−0.139	0.908**	–	0.542**	0.182	0.349**	0.326**
5	Numerical skills	0.185	−0.158	0.751**	0.781**	–	0.216	0.522**	0.545**
6	Working memory forward span	−0.072	−0.121	0.464**	0.487**	0.513**	–	0.274*	0.167
7	Working memory backward span	0.159	−0.004	0.610**	0.604**	0.710**	0.493**	–	0.297**
8	Nonverbal intelligence	0.315**	−0.119	0.563**	0.570**	0.705**	0.403**	0.517**	–
9	Age	0.003	−0.215	0.703**	0.709**	0.728**	0.531**	0.581**	0.539**

Raw correlations are presented below the diagonal and partial correlations controlling for chronological age above the diagonal. * = p < 0.05, ** = p < 0.01.