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. Author manuscript; available in PMC: 2014 Aug 18.
Published in final edited form as: Neuropsychologia. 2013 Jul 26;51(11):2305–2317. doi: 10.1016/j.neuropsychologia.2013.06.031

Table 4.

Hierarchical regression models of numerical operations scores with domain general predictors (Model 1), and the additional variance accounted for by visuo-spatial working memory (Model 2). Model 1 R2=.076, p=.29, Model 2 R2=.22, p=.05.

B (SE) â rpart p
Model 1
  Full scale IQ .15 .32 .09 .08 .64
  Word Reading .47 .40 .22 .20 .26
Model 2
  Full scale IQ .11 .30 .07 .06 .70
  Word Reading .28 .38 .13 .12 .47
  Block Recall .62 .24 .42 .41 .02