Since being in relationship motivates and drives human development, the author proposes different theoretical languages as a way to promote exchange and professional development. She considers the significance of relationship in shaping human development as demonstrated by recent scientific debate and connects various theoretical frames of reference and transactional analysis. The concepts of relational behaviors, internal working models (Bowlby), and ego states (Berne) are analyzed and compared. The relationship between body and script is discussed with reference to various contemporary views and with attention to the early phases of development and interactions with caregivers. The author emphasizes the significance of early interpersonal relationship patterns in organizing and regulating individual body/mind units by connecting and updating some basic transactional analysis concepts. Considering the significance of body experience in the growth process underscores, as fundamental, the intersubjective relational quality of human experience.