Combating Ebbinghaus’ Forgetting Curve with Lexigo: A Multimodal and Gamified Mobile Application for Vocabulary Enhancement

LexiGo is a prototype mobile application designed for the improvement of English vocabulary grounded in Ebbinghaus’ forgetting curve, which incorporates multimodal and gamified learning experiences. Through the integration of spaced repetition, interactive challenges and multimedia input, form–meaning connections are reinforced and cognitive processing is enhanced. Adopting the Technology Acceptance Model (TAM), this study investigates learners' perception of usefulness, ease of use, attitude toward use and behavioural intention toward LexiGo. Findings indicate high user acceptance (M > 4.0; α = .884–.981), and all constructs significantly predicted behavioural intention (p <. 001). The regression model was significant, F(3, 56) = 48.72, p <. 001, which accounted for 72.8% of the variance in behavioural intention (R² =. 728). The results affirm its value as an adaptable learner-centred tool for vocabulary retention in higher education environments. These findings imply that LexiGo could be adopted as a tool for integrating AI-based adaptive learning in a mobile-assisted language learning (MALL) environment with broad scalability.

vocabulary, memory retention, gamification

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