Infant Observation is a valuable training experience for workers in child and adolescent mental health, helping both to conceive the infantile experience of the children under their care, and to understand the parents' accounts of a child's history. It is an experience that gives trainees a unique opportunity to observe the development of an infant, systematically and practically from birth, in the child's natural setting, thus facilitating the acquisition of a meaningful understanding of how human relationships emerge and develop. Infant Observation gives the trainee a clear focus on the baby and his family, whilst remaining as a participant observer, and spontaneously encouraging problem-free talk.