Card sort with 'Don't know' group

1. How many participants do I need for a card sort?
2. What is card sorting NNG?
3. How do I choose a card topic for sorting?
4. Is card sorting qualitative?

How many participants do I need for a card sort?

We recommend 15 participants for card sorting: with more, you'll get diminishing returns for each additional user; with fewer, you won't have enough data to reveal overlapping patterns in organization schemes. Analyze the data.

What is card sorting NNG?

Card sorting is a UX research technique in which users organize topics into groups. Use it to create an IA that suits your users' expectations. Video Author.

How do I choose a card topic for sorting?

Identify and Prioritize Card Sort Study Goals

Your study goals should go beyond “how do participants sort our content?” Try to put your finger on what you need to know about this particular collection of content—and how your target users think about it—in order to make effective design decisions.

Is card sorting qualitative?

However, card sorting can also provide qualitative data in the form of user commentary, body language, and facial expressions. And there's inherent value in watching participants complete a card sort.