演題：Comparative Studies of TBLT and other approaches
Comparative method studies seek to determine which of two or more language teaching approaches is most effective. They are notoriously difficult to implement, and many suffer from a number of design problems. Ellis and Shintani (2014) listed 6 design features of a sound method comparative studies: 1) including pre-tests, 2) including a control group, 3) examining process features of the instruction, 4) controlling teacher-factors, 5) controlling test-bias, and 6) investigating the effects of individual learner differences. In this talk, I will focus on comparative method studies that have compared TBLT with some other teaching approach and evaluate them in terms of the conditions that Ellis and Shintani proposed. I will first distinguish two types of comparative method studies – ‘program evaluations’, in which TBLT is compared to some pre-existing program and ‘focused comparative studies’, in which the comparison between TBLT and another approach was built into the design of the study. Based on my examination, I will offer some guidelines for conducting comparative method studies.