Skip to main content
. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Early Child Res Q. 2011;26(2):169–181. doi: 10.1016/j.ecresq.2010.09.002

Table 3.

Taxonomy of fitted growth models for the effects of child gender, spoken vocabulary at two years, and cognitive skills on the growth of self-regulation from 14 to 36 months of age, controlling for maternal language (N=120 children, 290 observations).

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