Published online by Cambridge University Press: 03 August 2020
In this chapter we take a look at the emerging role of meta-analysis and research synthesis in interaction, feedback, and task-based research into how second languages are learned, as well as provide some instructions on how to systematically conduct a meta-analysis to achieve sound results in these areas. The chapter begins with a description of meta-analysis and research synthesis and their contributions to research in applied linguistics and second language research in general. Next, previous meta-analyses on the topics of interaction feedback, tasks and task-based language teaching (TBLT), and related methodologies are summarized. Then, clear guidelines for conducting meta-analyses are provided. The chapter ends with a discussion of how meta-analysis and replication research can help in answering essential questions in respect to interaction, feedback, and task research and also provides a few cautions, or things to look out for.