GABRB2 and psychotic disorder: Insofar that the social cognitive functions in psychosis and altruism may be implemented by neuronal gene products of cognition genes, the possibility arises that GABRB2 of the GABAergic system and COMT of the dopaminergic system came to reveal themselves as SCZ-susceptibility genes as well as altruism genes on account of their putative roles as cognition genes.