Effects of recasts, clarification requests on suprasegment development of English intonation
2021
A total of 102 English as a Foreign Language (EFL) learners participated in the present study, which aimed to test how different types of corrective feedback-recasts and clarification requests-can differentially affect the suprasegment development of English intonation. All participants received 5 treatment sessions designed to encourage them to notice and practice the target feature in meaningful discourse; recasts or clarification requests were provided to the participants’ untargetlike production, except those in the control group (n=34), who received comparable instruction but without corrective feedback. Acoustic analyses were conducted on 7 intonation features including words/IP, pause, anacrusis, lengthing, pitch reset, improper tonicity and tone selection elicited via pretest and posttest measures targeting trained instances and untrained instances. The results showed that 1) recasts are more effective than clarification requests on EFL learners’ suprasegment development of English intonation; 2) recasts may not only lead learners to establish, reinforce and generalize their new phonological knowledge of English intonation that they had practiced during the treatments, but also help them transmit their attention from trained to untrained learning of foreign language input at a suprasegmental level.
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