During the 1970s, two international studies demonstrated that US psychiatrists diagnosed about twice as many patients as having schizophrenia as psychiatrists in other countries, where psychoanalytic training was relatively uncommon.
V 70. letech dvě mezinárodní studie prokázaly, že američtí psychiatři diagnostikovali schizofrenii u dvakrát více pacientů než v ostatních zemích, kde se psychoanalýza nevyučovala v tak hojné míře jako v USA.