Abstract Objectives To assess the effectiveness of a web-based gamified auditory-cognitive dual-task training (ACDT) in improving the everyday listening abilities of older adults with hearing loss (HL), including speech perception performance, cognition, and self-reported hearing.

Hypothesis to be tested ACDT participants will show significantly greater improvements in 1) self-reported hearing; 2) speech perception-in-noise; 3) attention; 4) reasoning; and 5) dual-task of listening and working memory compared to the control group at week 6, immediately post-intervention, and week 24.

Design and subjects A prospective, single-blinded, two-arm parallel randomized controlled trial with individual semi-structured interviews. 164 Chinese adults aged 60 years or older, who speak Cantonese or Putonghua, and have mild-to-moderate HL with a pure-tone average of 20-50 dB across octave frequencies 0.5 to 4kHz in both ears.

Study instruments A web-based gamified auditory-cognitive dual-task training. Interventions This is a 12-week program conducted five times a week, with each session lasting 60 minutes, following a sequential dual-task training design. Each session includes auditory training in speech-in-noise, rapid speech, and competing speaker, and cognitive training focusing on executive function, perceptual-motor ability, memory, and complex attention.

Main outcome measures Self-reported hearing (untrained); Speech perception in noise (trained), attention in listening and sustained selective attention (trained), reasoning (trained), and dual-task of listening and working memory; complex span working memory (trained).

Data analysis Descriptive statistics, an independent sample t-test or chi square test, generalized estimating equation and thematic analysis will be used.

Expected results ACDT significantly improves the everyday listening abilities of older adults with HL.