 Rosenfeld made seminal contributions to Kleinian thinking on psychotic and other very ill patients; while his emphasis on the role of the analyst in contributing to potential impasses in the analytic encounter has had a wide impact on analysts both in Britain and internationally.With a medical diploma from Munich (1934), Rosenfeld emigrated to Britain in 1935, where he retook his medical degree.He became a psychiatrist and specialised in the psychoanalytic treatment of psychosis.