•  The architecture of the human language faculty, regarded as a species property and the core of our specifically human mentality: What is special to human language in contrast to animal communication systems at large? Which mechanisms entering into language are language-specific? What is the minimal descriptive apparatus needed to characterize human language which would preserve explanatory adequacy? 
• Metaphysics: human nature, and the nature and structure of mind as a natural phenomenon. What is the evolutionary and ontogenetic origin of concepts? Their role in the compositionality oflanguage? And their neural correlates, if any?
• Philosophy of science of the "young" sciences of psychology, linguistics, and biology
• History of Science: early modern "natural philosophy" and rationalism.

The Origins of Truth and the Origins of the Sentence (NWO)

The basic idea of this project is that our human ability to make judgements of truth likely depends on very specific structural preconditions that are intrinsic to the human mind as a naturally evolved structure. More specifically, a mind judging the truth is a propositional mind, and there is a good question to be asked to what extent a propositional mind is necessarily also a linguistic one. To what extent, then, is the evolution of our sense of truth premised by an evolution of the sentence? And how do we best describe the sentence, as a particular hierarchical structure that correlates with propositional kinds of meanings?