Table 1.

Mean postnatal day (± SEM) when markers of pubertal onset were first noted in females and males in the pre-pubertal onset (pre-P) and peri-pubertal onset (peri-P) treatment groups. Saline or 3 mg/kg AMPH treatment began on P27 for rats in the pre-P group and P37 for those in the peri-P group.

	pre-P			peri-P
	saline	AMPH	saline	AMPH
Female	34.8 ± 0.49 (n = 6)	34.3 ± 0.61 (n = 5)	38.7 ± 2.40* (n = 6)	40.0 ± 1.27* (n = 4)
Male	44.7 ± 0.84 (n = 4)	45.0 ± 0.45 (n =6	45.2 ± 0.91 (n = 3)	45.3 ± 0.75 (n = 5)

The number of subject per group is indicated in parentheses.

^*p < 0.05, vs female pre-P groups (collapsed across treatment).