Table 1.

Number of vocalizations of each vocal type for each infant at each age.

Infant	Age 3;0–5;4			Age 6;0–8;4			Age 9;0–11;4			Total
	Vocant	Squeal	Growl	Vocant	Squeal	Growl	Vocant	Squeal	Growl
1	73	2	23	53	5	40	77	6	15	294
2	72	21	5	67	15	16	70	22	6	294
3	79	14	5	72	19	7	74	23	1	294
4	68	20	10	78	7	13	80	3	15	294
5	71	0	27	66	0	32	84	1	13	294
6	71	2	25	91	1	6	75	11	12	294
Total	434	59	95	427	47	114	460	66	62	1764