When Genotype × Environment (G × E) interactions
are present, heritability estimates are not interpretable. Mealey
cites abundant evidence for G × E interactions in the etiology
of sociopathy, thereby completely undermining estimates of the
heritability of sociopathy which form the foundation of her model.
Without proper evidence for a genetic basis of sociopathy,
Mealey's sociobiological model collapses under its own
great weight.
