Designing for the Mind: Using Cognitive Load to Measure UX Effectiveness
at UX Australia 2026
Type
talk
User experience design often focuses on usability, accessibility, and task success. But even when users complete a task successfully, an interface may still be demanding unnecessary mental effort. Every extra cognitive load adds friction to the user experience.
People
Ben Shelton
Cordelia Prangley
Methods
Usability TestingUsability testing reveals where people struggle while attempting realistic tasks with a prototype or service. In a moderated session, a researcher observes the participant and may ask them to explain their thinking. Use it to investigate confusing language, layouts or interactions and identify improvements. Agree research questions, recruit likely users and prepare believable tasks that do not reveal the solution. Explain that the service is being tested, then mostly watch and listen rather than guiding participants. Record observations and follow up on unclear behaviour. Plan accessible sessions, including participants’ own assistive technology when appropriate.
Inclusive DesignInclusive design identifies who an experience excludes and involves people with different abilities and perspectives in shaping it. Start by examining assumptions and mismatches between a person and the product or environment. Work with people who experience those barriers, then explore solutions that address their needs and may benefit others. Use this approach throughout product and service development, including decisions about interaction, communication and participation. Revisit whose perspectives are missing as the design evolves.