UX Glossary

Card sorting

A method used to identify categories that are inherent in a set of items. The goal of card sorting is to understand how a typical user views a given set of items. Card sorting can be done manually by writing items on individual paper cards, and then asking users to group together similar cards. This also can be done using many different software systems. The grouping information from all card sorters is then combined and analyzed using cluster analysis software.

Also see: Open Card Sort, Closed Card Sort and Hybrid Card Sort as well as Card Sorting in 5 simple steps [infographic].