Table 3.

Main effects and interactions between SNP rs40184 and subcortical nuclei (nucleus accumbens, caudate and putamen) on WM development from age 14 to age 19 (i.e. WM19 = β₀ + β₁ rs40184 + β₂ subcortical nuclei + β₃rs40184 × subcortical nuclei + β₄WM14 + β₅sex + β₆site + ε). Significant p-values (p < .05) denoted in bold.

Model for subcortical nuclei:	L/R Accumbens	L/R Caudate	L/R Putamen
rs40184	F = 0.45, p = 0.64	F = 0.53, p = 0.59	F = 0.34, p = 0.71
Subcortical nuclei	F = 1.76, p = 0.19	F = 1.48, p = 0.22	F = 0.33, p = 0.56
Rs40184*Subcortical nuclei	F = 0.44, p = 0.65	F = 1.08, p = 0.34	F = 5.22, p = 0.004