Table 1. Click-evoked ABR peak latencies measured 20 dB above each animal’s threshold.

Peak	Mother	Cocarer	Naive	df	F	p
I	1.739±0.011a	1.763±0.025a	1.839±0.017b	2,18	7.839	0.004*
II	2.409±0.028a	2.474±0.031a	2.615±0.031b	2,18	7.831	0.004*
III	2.967±0.069	2.920±0.040	3.002±0.067	2,18	0.470	0.630
IV	3.561±0.153	3.337±0.051	3.578±0.085	2,18	1.635	0.223
V	4.219±0.195	4.142±0.049	4.471±0.116	2,18	1.655	0.220

Click ABR latencies (mean ± sem) at 20 dB above click threshold.

*Significant at the Sidak adjusted alpha level for multiple post-hoc ANOVA comparisons after a significant MANOVA: p = 0.010.

^abvalues sharing a common letter are not significantly different in a post-hoc analysis. All values are in milliseconds.