Enhancing English Vocabulary Acquisition of Indonesian EFL Students through Auditory Feedback in Quizizz

Abstract

This quasi-experimental study investigates the efficacy of auditory feedback in Quizizz, a gamified learning platform, for enhancing vocabulary acquisition among Indonesian EFL learners. Sixty-two 11th-grade students from SMA 1 Tenggarong were assigned to an experimental group (n=34) using Quizizz with auditory feedback and a control group (n=28) receiving traditional teacher-led instruction. Over four 60-minute sessions across two weeks, both groups studied identical vocabulary content. Pre- and post-tests employing the Vocabulary Size Test (Nation & Beglar, 2007) measured receptive vocabulary gains, while a bilingual Intrinsic Motivation Inventory (Ryan & Deci, 2000) assessed perceptions. Results revealed significantly greater vocabulary improvement in the experimental group (mean gain +0.20 vs. control's -0.28; *t*(60)=2.34, *p*=.023, *d*=0.42), with notably higher motivation scores across all subscales (Interest, Competence, Effort, Value; *p*