now in the modern age theres evidence that growing up with only one parent can have all kinds of negative effects on the childs brain and development. single moms will almost always subconsciously punish their boys for things their partner did or didnt do, like teaching them consent and not raising their voices at very young ages, not because of anything the child did but because the mother is bitter about how men have treated her in the past. teaching the boy to not upset mommy like daddy did takes precedent over teaching the kid life skills.