- Member of the selection committee for the Gottfried Wilhelm Leibniz Prize of the DFG (since 2020)
- Member of the Berlin School of Mind & Brain
- Member of the Academia Europaea (since 2006)
- Editor-in-Chief, Theoretical Linguistics (since 2002)
- Co-editor of the book series Studia Grammatica (since 2008)
- Member of the editorial board of the journal Annual Review of Linguistics
- Member of the editorial board of the journal Linguistics and Philosophy
- Member of the scientific advisory board of the journal Linguistic reports