TABLE 3

Increase in Adult Words, Child Vocalizations, and Conversational Turns Over Time

Vocalization Counts32 wk (n = 35)36 wk (n = 33)Percent ChangeSignificance
Total adult words+160.0001
    Mean ± SD3306 ± 42748556 ± 6407
    Median12898255
    Range144–16549374–26145
Hourly adult words+160.0001
    Mean ± SD207 ± 267535 ± 400
    Median81153
    Range9–103423–1634
Total conversational turns+96.0009
    Mean ± SD25 ± 2948 ± 45
    Median1536
    Range0–1053–188
Hourly conversational turns+95.0012
    Mean ± SD2 ± 23 ± 3
    Median12
    Range0–70–12
Total child vocalizations+76.0003
    Mean ± SD113 ± 101195 ± 156
    Median77153
    Range10–37421–705
Hourly child vocalizations+81.0002
    Mean ± SD7 ± 612 ± 10
    Median510
    Range1–231–44