Table 1 Correlation matrix for predictors of overlapping sample of n = 755

From: Epigenetic variance in dopamine D2 receptor: a marker of IQ malleability?

 

gIQ

BOLD

Epigenetic

Polygenic score

BOLD

0.14****

   

Epigenetic

−0.10**

0

  

Polygenic score

0.13****

−0.03

−0.03

 

Gray matter

0.03

0

−0.03

0.01

  1. The correlation coefficients are based on linear regressions on residuals partialling out variance from variables of no interest
  2. gIQ general IQ
  3. BOLD, functional activation during reward anticipation; epigenetic, methylation in CG site DRD2 cg26132809; polygenic score, polygenic score including 5636 SNPs significant at a p-threshold of 0.01 from Sniekers et al.; gray matter, gray matter density in striatum
  4. Significant levels (two-tailed) ****p < 0.0001; ***p < 0.001; **p < 0.01, *p < 0.05
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