@ZhiZhu@newsie.social @bebadefabo@mastodon.social There is an increasing body of literature that points to that behaviour being caused by childhood trauma. Narcissism can be perpetuated in a toxic family dynamic and those people often feel victimised at the same time as they're being abusive. It can come from a place of deep insecurity and shame, so they're hurting and lashing out rather than getting the help they need.