Perhaps structure the title to highlight both cultural and psychological aspects: "FKK and Child Development: The Role of Visual Culture in Shaping Attitudes Toward the Human Body".
Another angle could be comparing FKK with other cultures' approaches. Maybe "FKK Kinder Bilder in Comparative Perspective: A Cross-Cultural Study of Naturism and Childhood". Fkk Kinder Bilder
Let me check for existing research to ensure the title isn't too similar. Quick search... Seems like most titles focus on broader FKK aspects, so a specific focus on children's imagery could be a niche angle. Perhaps structure the title to highlight both cultural