Evaluation of a Prototype Interactive Working Memory Application for Children with Learning Disabilities
Elaine Pearson, Adel Shaban · 2019 · Proceedings of the 16th International Web for All Conference (W4A) · doi:10.1145/3315002.3332440
Summary
This short paper presents an expert evaluation of a prototype working memory training application designed specifically for children aged 7-9 with learning disabilities. The application was built using a novel design framework that integrates three distinct sets of guidelines: Human-Computer Interaction principles (user experience and accessibility), Cognitive Load Theory, and gamification techniques. The rationale for combining these approaches is that children with learning disabilities often have impaired working memory capacity, and while working memory training can improve knowledge acquisition, conventional training systems tend to be tedious and repetitive, undermining motivation and limiting learning transfer. The framework addresses this by using gamification elements — levels, incentives, points, and game-like interactions — to sustain engagement, while applying cognitive load management principles to ensure the application does not overwhelm the limited working memory capacity it aims to train. The design process began with detailed user personas capturing the characteristics, needs, and preferences of the target group. The application includes three types of working memory tasks: phonological tasks (verbal/auditory), visuospatial tasks (visual/spatial), and central executive tasks (combining both), with progressive difficulty, constructive feedback, and rewards. Instructions are delivered through spoken and visual cues rather than written text, reducing the reading burden on children who may struggle with literacy.
Key findings
Twelve expert reviewers from diverse specialisms — accessibility, UX design, cognitive psychology, educational psychology, and web development — conducted a heuristic evaluation of the prototype against the 32 design guidelines using a 5-point Likert scale survey with free-text responses. The quantitative results showed that 80% of the guidelines were judged to be appropriately and consistently applied in the prototype. Highly rated elements included the use of constructive feedback, spoken and visual instructions instead of written text, design choices that minimize cognitive load, and built-in support mechanisms. Qualitative feedback identified several areas for improvement before testing with children: limiting the frequency of game play in a more consistent way, reducing the number of colors used, simplifying the level of detail on the game selection page, redesigning some games to reduce complexity, simplifying certain images and icons, adding pre-training activities for familiarization, and adjusting the presentation of some visual elements. These findings demonstrate that the multi-disciplinary framework produces a workable design, though expert review remains essential for catching usability issues before user testing with vulnerable populations.
Relevance
This research is relevant to accessibility practitioners working on educational technology or content for users with cognitive and learning disabilities. The framework's integration of cognitive load theory with accessibility and gamification principles offers a structured approach that could be adapted for other applications targeting users with limited working memory or attention capacity. The emphasis on spoken and visual instructions over written text reflects an important design pattern for cognitive accessibility — reducing the reading demands that can create barriers for users with learning disabilities, dyslexia, or low literacy. The expert evaluation methodology, using reviewers from multiple disciplines to assess against explicit guidelines before involving vulnerable end users, provides a responsible model for developing accessible technology for children. For web accessibility specifically, the principles of minimizing cognitive overload, providing multimodal instructions, and using progressive difficulty align with emerging cognitive accessibility guidelines and the broader push to make WCAG more inclusive of cognitive and learning disabilities.
Tags: learning disability · cognitive accessibility · working memory · gamification · cognitive load · children · heuristic evaluation · user-centered design · educational technology