Usability

Card Sorting is a way to involve users in grouping information for a Website. Participants in a card sorting session are asked to organize the content from your Website in a way that makes sense to them. Participants review items from a website and then group items into categories. There are two types of card sorting:

• Open Card Sorting: An open card sort is typically done when you want to learn how users group content and understand the terms or labels users call each category.
• Closed Card Sorting: A closed card sort typically works best when researchers are working with a pre-defined set of categories and you want to learn how users sort content items into each category. 

The purpose of card sorting is to build the structure of a website or application such as what items to place on a home page or how to label home page categories. It also helps to ensure that information is organized on the website in a way that it is logical to users. Testing should be conducted early. The benefit of card sorting is that if the users are representative of the website or applications typical user population then the results should reflect the structure that users expect.