This research article aims to discover L2 writing processes of Thai graduate students using the model of composing processes by Chenoweth and Hayes (2003). The participants were six graduate students from the Graduate School of Language and Communication. The participants were given an English argumentative writing task to complete while being observed through the use of the think-aloud protocol (TAP). Later, the participants were interviewed immediately after finishing the writing task. The finding validates the model of composing processes ...