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This study investigated the effects of negative feedback type (i.e., explicit correction vs. recasts), communication mode (i.e., face-to-face communication vs. synchronous computer-mediated communication), and target structure salience (i.e., salient vs. nonsalient) on the acquisition of two Turkish morphemes. Forty-eight native speakers of English with no Turkish background carried out two communicative tasks during which their errors on the target structures were treated according to their feedback group. Oral production, comprehension, and recognition tests were used to measure learners' resulting performance. A clear advantage was found for explicit correction over recasts in the oral production and comprehension tasks on both immediate and delayed posttests. Results also showed that neither communication mode nor target structure salience moderated the difference between the negative feedback types but both factors made independent contributions to feedback effectiveness.

This study investigated the role of corrective feedback timing in the acquisition of Spanish noun–adjective gender agreement. Forty‐five learners completed a communicative task via synchronous computer‐mediated communication (SCMC) in one of three groups (immediate, delayed, control). The immediate‐feedback group received error reformulations immediately after their errors. The delayed‐feedback group did not receive feedback; however, at the end of the task, they were provided with an electronic document showing the errors they had made during the task with error reformulations. The control group performed the task without receiving feedback. The immediate‐feedback group outperformed the delayed‐feedback group in an oral production test, but there were no differences between the two feedback groups in a grammaticality judgment test. All study materials and data are made publicly available to encourage future replications. Open Practices This article has been awarded Open Materials and Open Data badges. All materials and data are publicly accessible via the Open Science Framework at https://osf.io/57zkv, the IRIS Repository at https://www.iris-database.org, and Supporting Information accompanying this article. Learn more about the Open Practices badges from the Center for Open Science: https://osf.io/tvyxz/wiki.

This study investigated the extent to which cognitive abilities that involve explicit cognitive processes (i.e., explicit language aptitude) are related to second language (L2) learning outcomes under two corrective feedback conditions. The study followed a pretest-posttest-delayed posttest experimental design. Forty-eight L2 learners of English carried out three oral production tasks, in which their errors on the indefinite article were treated according to their group assignment (i.e., explicit, implicit, and no-feedback). A set of controlled oral production tests was administered as pretest and posttest. Explicit language aptitude was measured using three subtests from the LLAMA Language Aptitude Test battery (Meara, 2005). Results showed that explicit language aptitude predicted immediate posttest performance only under the explicit feedback condition, suggesting that this type of feedback requires mental processes that are facilitated by explicit cognitive abilities and that its short-term effectiveness is not the same for learners with different aptitude levels.