Table 3.
Estimates for Exploratory Predictor of Developmental Trajectories: Number of Words Produced
| Fixed Effect | Receptive Language | Expressive Language | Nonverbal Cognition | Adaptive Behavior | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||||
| β | SE | p | β | SE | p | β | SE | p | β | SE | p | |
|
|
|
|
|
|||||||||
| Number of Words | ||||||||||||
| Intercept (mean) | 69.33 | 1.77 | < .001* | 75.99 | 1.48 | < .001* | 40.41 | 1.18 | < .001* | 79.05 | 0.77 | < .001* |
| Age of first words | −0.36 | 0.26 | .171 | −0.33 | 0.22 | .131 | −0.25 | 0.17 | .163 | −0.02 | 0.11 | .834 |
| Number of words | 0.19 | 0.05 | < .001* | 0.20 | 0.04 | < .001* | 0.08 | 0.03 | .011* | 0.11 | 0.02 | < .001* |
| Slope | ||||||||||||
| Age (rate of change) | 0.61 | 0.07 | < .001* | 0.17 | 0.07 | .021* | 0.15 | 0.05 | .006* | 0.02 | 0.03 | .516 |
| Age of first words | <0.01 | 0.01 | .980 | <0.01 | 0.01 | .762 | <0.01 | 0.01 | .611 | 0.01 | <0.01 | .044* |
| Number of words | <0.01 | <0.01 | .319 | <0.01 | <0.01 | .214 | <−0.01 | <0.01 | .237 | <−0.01 | <0.01 | .037* |
Note. Intercept reflects a chronological age of 45 months. All predictors were grand-mean centered.