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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Dev Sci. 2019 Jan 15;22(3):e12764. doi: 10.1111/desc.12764

Table 6.

Estimates of fixed effects, random effects, and goodness of fit for growth models using SES and book and non-book growth estimates to predict child school language, literacy and math outcomes. Coefficients are presented outside the brackets, and standard errors are presented inside the brackets.


Model 1 Model 2

Fixed Effects

Decoding

Intercept 100.602*** 100.594***
SES −.515 −.506
Parent book intercept −.003 −.006
Parent non-book intercept −.001 −.001
Child book intercept .025
Child non-book intercept −.001

Comprehension
Intercept 97.509*** 97.572***
SES 3.319*** 3.235***
Parent book intercept .016* .016*
Parent non-book intercept −.003 −.005
Child book intercept −.024
Child non-book intercept .017*

Vocabulary
Intercept 113.467*** 113.486***
SES 5.576* 5.587*
Parent book intercept .036* .047*
Parent non-book intercept .007 .004
Child book intercept −.017*
Child non-book intercept .036*

Math word problems
Intercept 112.913*** 113.414***
SES 6.708** 7.111**
Parent book intercept .032* .046*
Parent non-book intercept .008 .002
Child book intercept −.234
Child non-book intercept .059*

Internal motivation
Intercept 78.05*** 78.08***
SES −2.581 −2.590
Parent book intercept .069** .081**
Parent non-book intercept −.003 −.005
Child book intercept −.156
Child non-book intercept .024

Level 2
Decoding 1.381 (1.175) 1.345 (1.159)
Comprehension 23.203 (4.817)*** 21.059 (4.589)***
Vocabulary 148.926 (12.204)*** 138.584 (11.772)***
Math word problems 264.004 (16.247)*** 239.536 (15.479)***
Internal motivation 407.642 (20.190)*** 418.222 (20.450)***

Goodness of fit −2 log likelihood 1632.971 (16) 1672.368 (16)

Note.SES = socioeconomic status.

~

p < .10.

*

p < .05.

**

p < .01.

***

p < .001