Reverse Card Sorting
See tree testing.
In a reverse card sort or card-based classification test, an existing structure of categories and sub-categories is tested. Users are given tasks and are asked to complete them navigating a collection of cards. Each card contains the names of subcategories related to a category, and the user should find the card most relevant to the given task starting from the main card with the top-level categories. This ensures that the structure is evaluated in isolation, nullifying the effects of navigational aids, visual design, and other factors.
Reverse card sorting is evaluative; it's used to judge whether a predetermined hierarchy provides a good way to find information.
Read more about this topic: Card Sorting
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