Table 1. Behavioral Results: % correct responses averaged across 3 runs for low and high mathematical ability groups.

Task	Group	Minimum	Maximum	Mean	Std. Deviation
Dot Ratio 1∶2	High	58.30	88.90	75.32	9.49
	Low	65.00	88.90	75.48	8.39
Dot Ratio 2∶3	High	30.60	80.60	63.95	16.43
	Low	55.60	80.60	68.38	8.54
Dot Ratio 3∶4	High	36.10	80.60	61.96	12.14
	Low	41.70	77.80	60.85	12.20
Dot Ratio 4∶5	High	47.20	75.00	56.20	7.62
	Low	40.00	77.80	54.66	14.30
Dot Ratio 7∶8	High	38.90	80.60	54.70	10.24
	Low	44.40	61.10	52.26	6.58
Dot Setsize Small	High	40.00	80.00	67.05	10.34
	Low	63.80	86.70	73.05	8.33
Dot Setsize Medium	High	52.50	83.80	70.02	9.91
	Low	51.30	76.30	64.10	8.20
Dot Setsize Large	High	55.00	83.80	67.62	9.04
	Low	58.80	78.80	70.94	7.48
Color Task	High	58.30	96.70	81.95	12.21
	Low	67.70	95.00	87.00	8.50

Note. N (low mathematical ability group) = 8; N (high mathematical ability group) = 13.