30u30 are an artifact of networking not directly Machiavellianism/sociopathy; pals promote them (often as children of their pals) to the list.

You don't think Machiavellianism would be overrepresented in a group selected in this way?

Indirectly; U30 are typically propelled by their parents who might be well-connected Machiavellian or sociopathic.

	▲	estearum 9 hours ago \| parent [-]
		So in other words you'd expect Machiavellianism and sociopathy to be overrepresented in 30u30