The project examines the differential effectiveness of the two prevention programs FAUSTLOS and FRÜHE SCHRITTE (Early Steps) in children with difficult developmental conditions. The two prevention projects are being carried out in seven selected daycare centers and aim to investigate whether the additional effort involved in FRÜHE SCHRITTE is worthwhile in the short and long term compared to the standardized FAUSTLOS program, and what advantages and disadvantages there are. Numerous studies in empirical infant research, attachment research, and psychoanalysis report how formative social relationships in the first years of life are the best prerequisite for successful psychological, cognitive, and psychosocial development, including language acquisition. Although a wide range of prevention programs draw on these empirical findings and strive to provide early support for children as early as kindergarten age, these services do not reach all families, as families with a migrant background, for example, are often unaware of them.