. Author manuscript; available in PMC: 2007 Apr 12.

Published in final edited form as: J Pediatr. 2007 Feb;150(2):151–156. doi: 10.1016/j.jpeds.2006.10.053

Table 1.

Log Cortisol values before and after presentation of novel toys (mean ± SD)

	Basal	After presentation of novel toys	p
3 mo^*	−.69 ± .34	−.70 ± .26	.07
6 mo^*	−.77 ± .31	−.82 ± .30	.99
8 mo^**	−.77 ± .32	−.87 ± .28	.22

adjusted for time of day

^**

adjusted for time of day and time since waking