Arguably, however, it was in Anna Freud's London years 'that she wrote her most distinguished psychoanalytic papers - including "About Losing and Being Lost", which everyone should read regardless of their interest in psychoanalysis' [REF].
Focusing thereafter on research, observation and treatment of children, Anna Freud established a group of prominent child developmental analysts (which included Erik Erikson, Edith Jacobson and Margaret Mahler) who noticed that children's symptoms were ultimately analogue to personality disorders among adults and thus often related to developmental stages.