TABLE 1.

Vocalizations, Vocalization-Mouthing Co-occurrences, CV Vocalizations, and CV Vocalizations With Mouthing by Age Group

	Vocalizations			Co-occurrences			CV Vocalizations			CV Vocalizations With Mouthing
Age in Months	M	SD	Range	M	SD	Range	M	SD	Range	M	SD	Range
6	92.1	32.9	54−133	28.3	16.5	2−48	24.7	11.2	7−41	8.2	6.6	1−17
7	71.9	31.2	38−126	22.9	13.9	9−45	27.8	15.8	10−58	9.7	7.3	0−22
8	80.9	54.3	21−202	19.2	17.7	1−59	26.5	27.3	4−89	7.8	9.5	0−23
9	96.4	56.2	27−192	22.4	18.8	0−55	44.5	29.4	9−106	10.6	9.0	0−29

Note. CV = consonant and vowel.