1997-1998 Contributions to the hearings of the parliamentary commission „Jugend-Arbeit-Zukunft“ (Youth-Work-Future) initiated by the regional parlament of Baden-Württemberg on the topics of open youth work, gender-specific youth work and support measures in transitions to work. 1990-1991 Study „Jugendliche in Tübingen“ (Youth in Tübingen) as a basis for urban planning in the Southern Tübingen, in cooperation with the University of Tübingen