Despite increased interest in second language (L2) pronunciation in recent years, the topic has been marginalized in the field of second language acquisition and teaching. Far less work has been carried out on L2 pronunciation, compared to skills such as grammar and vocabulary that have received much attention. Most of the instructional materials and practices developed for L2 pronunciation tend to heavily rely on basic intuitive notions suggested by language teachers and researchers, rather than research-based evidence (Derwing & Munro, 2005).