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How to run a Single Ease Question study

Six steps to run a Single Ease Question study, from defining tasks and sample size to asking the SEQ, adding an open-ended probe and analysing per task.
The probe in step five is what turns a score into a fix
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A six-step process for running a Single Ease Question (SEQ) study in a usability test. Define tasks, choose a sample size, run each task, ask the SEQ straight after, add an open-ended probe and analyse the results per task. It is for UX researchers and product teams who want a task-level ease score they can act on.

Where this appears

What's in this process

  1. Define your tasks: Write each as a goal the user can attempt without coaching.
  2. Pick a sample size: 10 to 12 people per task is reliable. Aim for 30 or more to benchmark.
  3. Run the task: Let them finish without interrupting. A request for help counts as a failure.
  4. Ask the SEQ straight away: Show it the moment the task ends, whether they succeeded or failed.
  5. Add an open-ended probe: Ask what made the task feel that way. A bare score has no diagnosis.
  6. Analyse per task: Report the mean, the 95% confidence interval and the share of users below 5.

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<a href="https://www.koji.so/visuals/seq-study-six-steps"><img src="https://www.koji.so/visuals/seq-study-six-steps/seq-study-six-steps.png" alt="Six steps to run a Single Ease Question study, from defining tasks and sample size to asking the SEQ, adding an open-ended probe and analysing per task." width="1080" height="1080" /></a>
<p>Source: <a href="https://www.koji.so/visuals/seq-study-six-steps">How to run a Single Ease Question study</a>, Koji</p>

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Table comparing the Single Ease Question and the System Usability Scale on scope, timing, question count, scale, output, sample size and time to administer.

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