In 1952 when he and Robertson presented their film A Two Year Old Goes to Hospital to the British Psychoanalytical Society, psychoanalysts did not accept that a child would mourn or experience grief on separation but instead saw the child's distress as caused by elements of unconscious fantasies (in the film because the mother was pregnant).
I 1952, da han og Robertson præsenterede deres film en to år gammel Går til hospitalet til den britiske Psykoanalytisk Society, havde psykoanalytikere ikke acceptere, at et barn ville begræde eller erfaring sorg på adskillelse, men i stedet så barnets nød som følge af elementer af ubevidste fantasier ( i filmen, fordi moderen var gravid) .