Voice-Based AI Chatbots in English Language Learning: A PRISMA-Guided Systematic Review on Recent Specialized Literature
Voice-Based AI Chatbots in English Language Learning: A PRISMA-Guided Systematic Review on Recent Specialized Literature

Summary/Abstract: This study, guided by the PRISMA protocol, systematically reviews research on voice-based AI chatbots in English language learning published from 2022 to the present. It addresses two questions: (1) What research questions and what kind of trends char¬acterize recent publications on their use? and (2) What future research recommenda-tions emerge regarding AI chatbots in voice mode for developing English-speaking skills? Findings show a predominant focus on speaking skills development and learn¬ers’ perceptions, with studies highlighting improvements in fluency, pronunciation, and coherence. Affective factors such as anxiety reduction and willingness to commu¬nicate received moderate attention, while contextual and demographic dimensions re¬main underexplored. Current evidence emphasizes performance outcomes but lacks methodological robustness, with frequent calls for larger, more diverse samples and comparative designs. This review clarifies trends, gaps, and future directions, offering guidance for educators and researchers seeking effective integration of voice-based chatbots in language education.

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