[Mentalities and sterilization laws in Europe during the 1930s. Eugenics, genetics, and politics in a historic context].

The laws and related practice of sterilisation in Germany during the Nazi period (1933-1945) were not isolated phenomena. Rather, they have to be understood in the broader context of the eugenic and racial hygiene movement developing internationally during the first decades of the twentieth century. Central conditions allowing its emergence were scientific, sociopolitical, and cultural factors. Fears of biological degeneration, economic considerations, and trust in the future potential of biology and in particular genetics played a crucial role in many western societies. Eugenics and the practice of sterilisation are constitutively linked to scientific justifications, just as - complementarily - the development of genetics, in particular psychiatric genetics, is inextricably associated with eugenics and its funding by philanthropic or state institutions. Parallels and a multiplicity of mutual relations existed on various levels, in particular between Germany, the US, and Scandinavian countries.