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Start for freeAn open card sort is a user research technique where participants organize topics or items into groups that make sense to them and create their own labels for these groups. This method helps researchers understand how users categorize and relate information, which is valuable for designing intuitive information architectures and navigation systems.
Synonyms: User-generated categorization, Open-ended card sorting, Participant-driven information grouping

Open card sorting is a simple yet powerful technique in user research. Here's how it typically works:
This method allows for maximum flexibility and creativity from participants, providing valuable insights into users' mental models.
Open card sorting offers several advantages in user research:
Open card sorting is particularly useful in certain scenarios:
By employing open card sorting at the right times, researchers can gain valuable insights to inform their design decisions.
What's the difference between open and closed card sorting?: In open card sorting, participants create their own category names, while in closed card sorting, categories are predefined by the researcher.
How many participants do I need for an open card sort?: Typically, 15-20 participants can provide reliable results for most projects, but this can vary based on the complexity of your content.
Can open card sorting be done remotely?: Yes, there are several online tools available that allow for remote open card sorting sessions, making it possible to conduct this research with geographically dispersed participants.
How long does an open card sort usually take?: The duration can vary, but most sessions take between 30-60 minutes, depending on the number of cards and complexity of the topics.