Table 2 Top six models of model comparison, among all possible combinations of 15 models

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

Model

∆BIC

df

gIQ ~ polygenic score + epigenetic + BOLD

0

751

gIQ ~ polygenic score + BOLD

1.02

752

gIQ ~ polygenic score + epigenetic + BOLD + gray matter

6.16

750

gIQ ~ epigenetic + BOLD

6.73

752

gIQ ~ polygenic score + BOLD + gray matter

7.08

751

gIQ ~ BOLD

8.24

753

  1. From top to bottom we display the models starting with the lowest Bayesian information criterion (BIC). We used the overlapping sample of n = 755 and residuals of our predictors (partialling out variance from variables of no interest)
  2. df degrees of freedom, gIQ general IQ
  3. ∆BIC, difference in Bayesian Information Criterion compared to the best model: ∆BIC = 0; BOLD, functional activation during reward anticipation in striatum; epigenetic, methylation in CG site of DRD2 gene 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
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