UX/UI Design: Foundations to Practice · Information Architecture
Card Sorting as a Research Method
Card sorting directly tests how real users mentally group and label content, providing genuine evidence for an information architecture decision rather than relying on a design team's own internal intuition about how content should logically be organized.
Card sorting presents participants with individual items of content, each on its own physical or digital card, and asks them to group these items into categories that make sense to them, optionally also asking them to name the categories they create, revealing genuine patterns in how real users conceptually group content that may differ meaningfully from how a design team's own internal logic would have organized the exact same items.
- Card sorting has participants group content items into categories that make sense to them, revealing genuine user mental models that may differ from internal team logic.
- Open card sorting lets participants create their own categories, useful early when structure is an open question; closed sorting validates a proposed structure against real users.
- Card sorting surfaces confusion an internal team, already deeply familiar with their own content, cannot notice on its own, since fresh participants encounter it naively.
- Results should be analyzed for genuine patterns repeated across multiple participants, not overreacting to a single participant's idiosyncratic grouping.