sentences:  From 1977 to 1979, Schopper was Chairman of the Association of the German Large Research Centres (now Helmholtz Association) and member of various advisory bodies of the Federal Ministry of Research, the Deutsche Forschungs Gemeinschaft and the Max Planck Society.After being member of the Scientific Policy Committee at CERN, Schopper was elected Director General and served from 1981 to 1988.His first task was to unite the two CERN laboratories existing at that time under two Directors General.