Final, generalised mixed-effect model for genotype modelled against right hemisphere volumes.

Formula: Genotype ∼ Right Hippocampus + Right Amygdala + (1|Age) where “∼” means modelled against, and “(1|age)” means that age is included as a random effect.Fixed effects:A generalised mixed-effect model is run using normalised volumes of right hemisphere grey matter structures and gender as explanatory variables together with age as a random effect. Genotype is set as the response variable. The final model is derived following an iterative model selection procedure that involves comparing successive models using Akaike's Information Criterion (see Methods for detailed description of model selection procedure).