The effect of digital game-based language learning mobile application on the development of complexity, accuracy, and fluency in foreign language monologic oral production among Chinese learners of English as a foreign language

The study reported the effect of a digital game-based language learning (DGBLL) mobile application “Speaking English Fluently – An Automated Scoring Artificial Intelligent Tutoring System on Spoken English” on the complexity, accuracy, and fluency in foreign language (FL) monologic oral production among 31 second year Chinese university learners of English as a foreign language (EFL). The participants’ monologic oral production was measured in the first (week 1) and last week (week 21) of a semester using the same narrative picture description task. The oral production was audio-recorded and transcribed. Both the transcripts and audio-files were analyzed on the complexity, accuracy, and fluency dimensions. The complexity was measured using the number of Mean (M) words per T-unit, the accuracy dimension was measured using the number of repairs and errors per 100 words; and the fluency dimension was measured via speech rate (i.e., number of words per minute), and M length of pauses. Students were required to download the mobile application and followed the monological practice section twice a week for 30 minutes each time. Using paired sample t-tests, we found that even though the participants’ repair rate and speech rate remained unchanged, they produced more complex monologic speech, had significantly fewer errors, and reduced average length of pauses after 20 weeks treatment using the mobile application, demonstrating a positive effect of the DGBLL mobile application on FL learners’ monologic oral production.