This quasi-experimental study investigated the potential benefits of two corrective feedback techniques (recasts and prompts) for learners of different proficiency levels. Sixty-four students in three intact grade 6 intensive English as a second language classes in the Montreal area were assigned to the two experimental conditions—one received corrective feedback in the form of recasts and the other in the form of prompts—and a control group. The instructional intervention, which was spread over a period of 4 weeks, targeted third-person possessive determiners his and her, a difficult aspect of English grammar for these Francophone learners of English. Participants' knowledge of the target structure was tested immediately before the experimental intervention, once immediately after it ended, and again 4 weeks later through written and oral tasks. All three groups benefited from the instructional intervention, with both experimental groups benefiting the most. Results also indicated that, overall, prompts were more effective than recasts and that the effectiveness of recasts depended on the learners' proficiency. In particular, high-proficiency learners benefited equally from both prompts and recasts, whereas low-proficiency learners benefited significantly more from prompts than recasts.This study is based on the first author's Ph.D. research (Ammar, 2003). We gratefully acknowledge the cooperation of the participating teachers and students. We thank Patsy Lightbown, Roy Lyster, Pavel Trofimovich, and the anonymous SSLA reviewers for their valuable input and feedback on earlier versions of this paper.
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