Research Interests

Empirical Foundations of Syntax

I started the Spoken Syntax Laboratory at CSLI to provide resources for collaborative work on syntax using multiple sources of evidence and modern statistical models.

Linguistic Typology

I am interested in theoretical models of typological variation of languages. I have served as an Associate Editor of the journal Linguistic Typology.

Dynamics of Probabilistic Grammar

I am working with other linguists, psychologists, and computer scientists to develop and test probabilistic models of how grammar varies in the individual and in speaker groups across space and time.

Lexical-Functional Grammar

I am one of the original designers and developers of LFG, the formal grammar system which allows flexible, typologically diverse linguistic description and has been embedded in explicit theoretical models of exemplar-based syntax, optimality-theoretic syntax, and stochastic grammar.

Spoken Syntax

Analyses of recorded speech corpora reveal that adults' and childrens' grammar depends on both the usage probabilities of multiword sequences and their prosodic and rhythmic patterns reflecting the syntactic context. My current work includes auxiliary contraction in adults' and childrens' speech and object pronoun enclisis (in progress).