This paper investigates the Lisu and Jingpho languages with a particular focus on the status of null arguments in these languages. Based on several diagnostics (the sloppy reading test, the quantificational interpretation test, and the adverbial interpretation test), it will argue that arguments in these languages can undergo an ellipsis process. The fact that argument ellipsis is available in these languages, which lack agreement between arguments and functional heads, supports the Anti-Agreement Hypothesis put forward in Saito (2007).
