This paper argues for the replication of two studies, both of which consider feedback and working memory. In the first part of this paper, we discuss the role of interaction-based research and working memory research in second language acquisition research. We then describe two studies that have unified these two areas in recent published articles and discuss ways that replication can further our knowledge in how working memory capacity can impact the benefits of feedback. We emphasize the importance of replication in a number of different areas, including grammatical complexity of the target structure and the nature of working memory tests, in scoring, actual tests, and modes of delivery. Additionally, we discuss the possibilities for replication in the area of population differences, in particular, age groups and more lasting effects as would be found in delayed post-tests. Finally, we point out another means of gathering information about thought processes and suggest the value of adding stimulated recalls to the existing data.
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