The significance of the physical-psychological interplay is evident throughout all stages of development, from prenatal life to infancy, early childhood development, school and latency periods, and into adolescence. The case studies reveal the complexity of a significance matrix that emerges in the interspace between body and psyche. Bernd Traxl: In the interspace between body and psyche. Christian Schubert / Magdalena Singer: The psychoneuroimmunology of early trauma. Agathe Israel: Approaching the psychological reality of the baby through its physicality. Viktoria Schmid-Arnold / Susanne Hauser / Catharina Salamander: How can the baby "inhabit" its body? Katarzyna Schier: Role reversal in the family and the disturbance of the child's body-ego. Angelika Staehle: Body, mother, and psyche. Elisabeth Brainin: "My body belongs to me." Sabine S. Klemz: How it is.