Table 3.
Descriptive Statistics and Pearson Correlations Among Measures of Prelinguistic Communication by Age Cohort
| Age Cohort (n range) | Outcome | Descriptive Statistics | Pearson Correlations | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Min | Max | cJA | cBR | fJA | fBR | ASQ | ||||
| 6-month (20–25) | cJA | 6.3 | 0.7 | 5.3 | 8.0 | |||||||
| cBR | 5.6 | 1.8 | 3.0 | 8.3 | .17 | |||||||
| fJA | 5.8 | 3.8 | 1.0 | 17.0 | .54 | .20 | ||||||
| fBR | 12.1 | 6.4 | 2.0 | 23.0 | .38 | .26 | .52 | |||||
| ASQ | 45.0 | 11.5 | 15.0 | 60.0 | .26 | .33 | .24 | .28 | ||||
| CSBS | 93.7 | 17.5 | 65.0 | 127.0 | −.06 | .48 | .07 | .10 | .62 | |||
| 8-month (56–62) | cJA | 6.7 | 1.1 | 5.0 | 9.0 | |||||||
| cBR | 5.7 | 1.6 | 3.0 | 9.0 | .30 | |||||||
| fJA | 9.5 | 5.4 | 1.0 | 25.0 | .08 | .13 | ||||||
| fBR | 13.4 | 6.3 | 3.0 | 29.0 | .00 | .26 | .19 | |||||
| ASQ | 47.6 | 10.2 | 10.0 | 60.0 | .18 | .05 | −.05 | .16 | ||||
| CSBS | 100.7 | 13.3 | 73.0 | 129.0 | .14 | −.02 | −.01 | .16 | .43 | |||
| 10-month (53–54) | cJA | 7.2 | 1.2 | 5.3 | 9.3 | |||||||
| cBR | 6.4 | 1.9 | 3.0 | 10.0 | .28 | |||||||
| fJA | 13.3 | 7.0 | 0.0 | 35.0 | .25 | .35 | ||||||
| fBR | 17.4 | 9.5 | 4.0 | 51.0 | .16 | .46 | .12 | |||||
| ASQ | 43.7 | 10.3 | 10.0 | 60.0 | −.17 | .17 | −.05 | .41 | ||||
| CSBS | 104.8 | 14.9 | 79.0 | 130.0 | −.06 | .11 | −.06 | .32 | .51 | |||
| 12-month (61–63) | cJA | 7.7 | 1.1 | 5.3 | 10.0 | |||||||
| cBR | 7.4 | 1.8 | 3.0 | 10.0 | .33 | |||||||
| fJA | 17.1 | 8.8 | 2.0 | 46.0 | .31 | .34 | ||||||
| fBR | 21.7 | 8.2 | 5.0 | 47.0 | .33 | .39 | .28 | |||||
| ASQ | 48.8 | 13.2 | 10.0 | 60.0 | .08 | .29 | −.01 | .17 | ||||
| CSBS | 101.4 | 12.8 | 76.0 | 130.0 | .21 | .36 | .21 | .27 | .61 | |||
Note. Bold values indicate p < .05. cJA = Complexity of Joint Attention,
cBR = Complexity of Behavior Regulation, fJA = Frequency of Joint Attention,
fBR = Frequency of Behavior Regulation, ASQ = Ages and Stages Questionnaire,
CSBS = Communication and Symbolic Behavior Scales.