Table 1.

Intercorrelations, means, standard deviations, and ranges of the measures of this study.

	1	2	3	4	N	M	SD	Range
1. Constructive play	–				73	7.22	2.22	9.00
2. Spatial ability	0.25*	–			128	13.25	7.45	27.00
3. Word problem-solving performance	0.35**	0.55**	–		128	6.68	2.87	14.00
4. Sex	-0.16	-0.14	-0.16	–	128	–	–	–

*p< 0.05, **p < 0.001.