The use of Web 2.0 technology in language education has received much research attention quite recently. In an attempt to shed more light on the use of Google Docs as a kind of Web 2.0 technology in language learning, the purpose of the present study was to compare the effects of online collaborative writing using Google Docs and collaborative writing in a face-to-face classroom on the writing performance and writing self-regulation of EFL learners. A sample of 38 homogeneous intermediate learners was recruited as the participants who were then randomly divided to an experimental group (N= 19) and a control group (N= 19). The participants of the experimental group received online collaborative writing using Google Docs while the control group received collaborative writing in the face-to-face classroom. Two timed-writing tasks and the Second Language Writing Self-regulation (SLWS) scale were administered to gather the data. The results obtained from performing paired-samples t-tests and ANCOVA revealed that collaborative writing both via using Google Docs and in the face-to-face classroom significantly enhanced the writing performance and writing self-regulation of the participants. However, the gains experienced by the experimental group were significantly higher than those experienced by the control group. Pedagogical implications for Google Docs supported collaborative writing are finally discussed.
