Our research is data-based, with the data mainly coming from natural language corpora. The theoretical background of our formal analyses is provided by Head-driven Phrase Structure Grammar (HPSG), construction grammar approaches, and Lexical Resource Semantics (LRS).

Currently, our main research focus is on the description and analysis of negation. Our department is involved in four projects belonging to the Collaborative Research Centre (CRC) 1629 Negation in Language and Beyond (NegLaB): 

• Resolving the Neg-Raising paradox
• Negation at the interfaces: Negation and existential quantification in German
• Negative polarity items in non-negative contexts
• Scientific services and data management

We are also working on A frame-based approach to describing implicit arguments.

All of our current research projects are funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG).