TABLE 2.

Means and standard deviations of children’s performance on the wooden puzzle pre-test by age and variable.

		Success	Concept Errors	Motor Errors	Prompts	Time (sec)
Age Measure
2 years	M	5.98	1.35	1.29	2.19	59.61
	SD	1.21	1.84	1.34	2.98	29.74
3 years	M	6.61	0.41	0.42	0.59	34.66
	SD	0.66	0.68	0.62	0.98	10.74

Maximum score = 7 as one piece was used to demonstrate.