Table 3.
Parameter | Model E | Model F | Model G | |
---|---|---|---|---|
Model C + Early Vocabulary | Model E + Interactions between Early Vocabulary and Gender | Model F + Cognitive Development | ||
Fixed Effects | ||||
Initial Status at 14 Months | ||||
INTERCEPT | γ00 | 3.5264*** (0.1537) | 3.7628*** (0.1572) | 1.8074*** (0.3498) |
GIRL | γ01 | −0.1226 (0.1536) | −0.9431*** (0.2567) | −0.5052~ (0.2520) |
VOCAB_24 | γ02 | 0.0027 (0.0029) | −0.0052 (0.0034) | −0.0076* (0.0032) |
GIRL* VOCAB_24 | γ03 | 0.0210*** (0.0055) | 0.0124* (0.0053) | |
Linear Rate of Change each Month (instantaneous rate of change at 14 months) | ||||
AGE | γ10 | −0.1055*** (0.0217) | −0.1220*** (0.0220) | −0.0458~ (0.0238) |
AGE* GIRL | γ11 | 0.0958** (0.0344) | 0.1459*** (0.0370) | 0.0814* (0.0365) |
AGE* VOCAB_24 | γ12 | 0.0004~(0.0002) | 0.0006* (0.0002) | 0.0005* (0.0002) |
AGE* GIRL* VOCAB_24 | γ13 | −0.0008~ (0.0004) | −0.0005 (0.0004) | |
Quadratic Rate of Change each Month (acceleration of change) | ||||
AGE2 | γ20 | 0.0025** (0.0008) | 0.0026** (0.0008) | 0.0010 (0.0008) |
AGE2* GIRL | γ21 | −0.0025* (0.0012) | −0.0028* (0.0012) | −0.0016 (0.0012) |
Main Effect of Child’s Vocabulary | ||||
VOCAB | γ40 | 0.0122*** (0.0033) | 0.0147*** (0.0037) | 0.0069~ (0.0035) |
VOCAB* GIRL | γ41 | −0.0088~ (0.0045) | −0.0135* (0.0056) | −0.0081 (0.0051) |
Main Effect of Cognitive Development | ||||
COGNITION | γ50 | 0.0219*** (0.0036) | ||
Main effect of Mom’s Vocabulary | ||||
M_VOCAB | γ70 | 0.0021 (0.0023) | 0.0025 (0.0023) | −0.0005 (0.0021) |
Variance Components | ||||
L 1: Within-person | σ2ε | 0.2862*** | 0.2919*** | 0.2432*** |
L 2: In Intercept | σ20 | 0.1433* | 0.0783 | 0.0684 |
In Rate of change | σ21 | 0.0003 | 0.0001 | 0.0003 |
Covariance 01 | σ01 | −0.0024 | −0.0006 | −0.0028 |
Fit Statistics | ||||
Deviance | 441.3 | 427.9 | 353.1 |
p < .10,
p < .05,
p < .01,
p < .001