I'm interested in syntax and its interfaces with morphology and semantics, and language variation and change. I have investigated phenomena such as case, nominalisation, binding and interrogative wh-reduplication, and the morphosyntactic properties of pronominal clitics and adverbials.

Much of my work is informed by my fieldwork on Mongolic languages, and data from CoSEM, a corpus of Singapore English (or Singlish) that I helped co-create with Wil Gonzales, Mie Hiramoto and Jakob Leimgruber.