José Bleger was born in Argentina in 1922. An active member of the Asociación Psicoanalítica Argentina, he was also a highly-regarded Professor of Psychology and a well known intellectual. Author of many books and papers, his reputation grew steadily after his early death in 1972. He is now considered a major figure of Argentinian psychoanalysis.

John Churcher is a psychoanalyst in private practice in Manchester, and a member of the British Psychoanalytical Society. Until 2002 he was a Lecturer in Psychology at the University of Manchester.

Leopoldo Bleger, born in Argentina, has lived in Paris since 1976. A Training Analyst of the Association Psychanalytique de France, he is currently General Secretary of the European Federation of Psychoanalysis.