Table 3.

Correlations between the measures.

	1	2	3	4	5	6	7
1. One-step symbolic
2. One-step standard WP	0.867
3. One-step non-standard WP	0.838	0.867
4. Two-step standard WP	0.822	0.811	0.822
5. Two-step non-standard WP	0.785	0.784	0.788	0.848
6. Working memory	0.460	0.452	0.455	0.470	0.456
7. Non-verbal reasoning	0.549	0.543	0.528	0.526	0.509	0.467
8. Reading comprehension (MOCCA)	0.573	0.557	0.570	0.609	0.555	0.393	0.447

All ps<0.001.