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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2011 Dec 8;19(1-2):122–149. doi: 10.1080/13825585.2011.628376

Table 2.

Estimates and Standard Errors From Linear Mixed Effects Models of Reading Time

Model 1 Model 2 Model 3 Model 4 Model 5

Est SE Est SE Est SE Est SE Est SE
Intercept 6.493*** .039 6.764*** .066 6.691*** .317 6.736*** .317 7.142*** .432
Fixed Item Effects
Syll   .049*** .01   .068*** .011   .066*** .012   .062*** .015   .117*** .033
logWF −.051*** .001 −.058*** .007  −.057*** .007 −.054*** .009 −.047** .019
NC   .058*** .017   .084*** .020   .086*** .020   .071* .028   .123* .061
IntSB   .040** .015   .064*** .019   .066*** .019   .016 .029 −.079 .064
SB   .479*** .028   .458*** .039   .454*** .033   .258*** .047  −.271*** .099
Fixed Subject Effects
ART  −.026*** .005 −.019** .007 −.019** .007 −.055* .028
Age .001 .004 .001 .004   .001 .004
Vocab −.046 .038 −.047 .037 −.046 .037
vWM −.028 .029 −.038 .030 −.134 .077
vWM×ART  .009 .006
Two-Way Cross-Level Interactions
ART×Syll −.002*** .001 −.002*** .001 −.002** .001 −.007* .003
ART×logWF   .001* .000   .001 .000 .001 .000  .000 .002
ART×NC −.002** .001 −.002** .001 −.003** .001 −.008 .005
ART×IntSB   .002* .001   .002* .001 .003* .001  .003 .005
ART×SB   .003 .002   .002 .002  .000 .002  .050*** .008
vWM×Syll .001 .003 −.012 .008
vWM×logWF −.001 .002 −.002 .004
vWM×NC .004 .006 −.009 .014
vWM×IntSB .023*** .006  .038* .015
vWM×SB .055*** .009  .185*** .023
Three-Way Cross-Level Interactions
ART×vWM×Syll   .001 .001
ART×vWM×logWF   .000 .000
ART×vWM×NC   .001 .001
ART×vWM×IntSB −.001 .001
ART×vWM×SB −.012*** .002

Random Effects
τ2   .122*** .015   .091*** .011   .089*** .011   .089*** .011   .087*** .011
Ψ2   .014*** .001   .014*** .001   .014*** .001   .014*** .001   .014*** .001
σ2   .167*** .001   .169*** .001   .168*** .001   .165*** .001   .169*** .001
Model Fit (−2 Log Likelihood)    64428.51    63063.12    57969.68    57851.11    57795.82