- Game theoretic pragmatics (main)
- Dialogue semantics, in particular the role of common knowledge
- Bidirectional Optimality Theory
- Polysemy and the structure of the lexicon
- Implicature and discourse structure
- Implicature and discourse structure (IDis), DFG, 01.01.2011-31.12.2013.
- Pragmatic Requirements for Answer Generation in a Sales Dialogue (PRAGSales), with Ralf Klabunde (U Bochum), DFG, start: June 2013 - May 2016.
- KomParse: Dialogue-capable NPCs for natural game environments, IBB, 01.06.2008-30.09.2011.