Table 1.

Mean (standard deviation) age (in months) for the three age groups by gender in Study 2.

	Male	Female
	n = 28	n = 21
2-year-olds	27.2	28.0
	(3.56)	(3.70)
	n = 45	n = 39
3-year-olds	42.3 (3.67)	43.1 (2.82)
	n = 15	n = 22
4-year-olds	55.4	55.3
	(3.35)	(3.59)