Lesley Caldwell is a psychoanalyst of the British Psychoanalytic Association. She has also worked as an academic, currently at UCL, for more than thirty [...] is the Chair of the Winnicott Trust and one of its editors.

Angela Joyce is a Training and Supervising Analyst of the British Psychoanalytical Society. She trained as a child analyst at the Anna Freud Centre where she has helped to pioneer psychoanalytic work with infants and parents, and is currently jointly leading the resurgence of child psychotherapy there. She also is an editor with the Winnicott Trust.

The Observation of Infants in a Set Situation (1941). Primitive Emotional Development (1945). Hate in the Countertransference (1947). Mind and its Relation to the Psyche-Soma (1949). Transitional Objects and Transitional Phenomena (1951; 1971). Metapsychological and Clinical Aspects of Regression Within the Psychoanalytical Set-up (1954). The Theory of the Parent-infant Relationship (1960). The Development of the Capacity for Concern (1963). Communicating and Not Communicating Leading to a Study of Certain Opposites (1963). Fear of Breakdown (1963). A Clinical Study of the Effect of a Failure of the Average: Expectable Environment on a Child's Mental Functioning (1965). Playing: A Theoretical Statement (1968). The Use of an Object and Relating Through Identifications (1968). Creativity and its Origins (1971).