In community based sociotherapy, we have observed positive changes in people’s emotional, psychic, somatic, moral, and social-relational life affected by trauma, among the first as well as the second generation. To understand and theorize what in the sociotherapy process may help to explain these changes needs an interdisciplinary approach. Themes that will be addressed from different theoretical perspectives during the conference will include: the impact of trauma on not only the psyche but also on the body and brain; the intergenerational transmission of trauma and violence; the neuroception of danger and safety; the resetting of the nervous system after trauma; and the co-regulation of each other’s behaviour in the recovery process. Outcomes of recent developments in interdisciplinary trauma research addressing the themes listed may contribute to a further development of the theoretical underpinnings of sociotherapy and other community-based MHPSS approaches.