I was shocked (or maybe not) when I found out that according to Adeo Rossi 40% of the Dutch people have 'personality flags':
Adeo Ressi Says The Dutch Are Kooky, France Is A Nightmare, And A Startup Wave Is Coming To The U.S.We test all sorts of personality attributes – we call them personality flags. We test if people have a high degree of narcissism, a high degree of entitlement, a high degree of troublemaking, whether they have a personality disorder—all of these types of things. It turns out that 40% of the people in the Netherlands have personality flags. It’s the highest ratio of personality flags of anywhere in the world.
So, just assuming that the number of psychopaths hasn't grown and excluding Israel (I am not sure whether Rossi even tested Israelis) the trickle down effect and ponerisation of Dutch society is massive. FWIW.