You will need

six paper hats (white, yellow, black, red, green, and blue), flipchart, and markers


1–2 hours


6–12 colleagues


2 – requires a facilitator

Use when...

  • you want to analyze already available data from all perspectives you can
  • most of the team members share one view of the innovation that can be both positive or negative

Do not use when...

  • the problem you want to tackle has not been clearly defined


  1. Choose the solution that will be evaluated under the thinking hats. The blue hat usually directs the discussion and chooses the order of thoughts.
  2. If there are not any available creative thoughts or solutions, it is good to start with the green hat.
  3. Starting with the red hat might be good for the evaluation of controversial topics to vent the initial emotions.
  4. Either everyone speaks only when having the hat of the same color, or everyone has their own hat, which he or she passes in the clockwise direction in the circle.
  5. Think in the way determined by hat’s color and write down the ideas.
  6. Repeat that with all colors. If you come up with a new solution when having a green hat, you can repeat the whole process.

Keep in mind that...

  • you need to devise the dramaturgy of the whole activity, including timetable
  • you should set the time limit for individual inputs to the discussion
  • your notes can, for example, take a form of a mind map

Find out more

In the analysis phase, you can use the following methods…

When you need to process the data to create a prototypical user

Download the book Service Design in Libraries

It includes detailed descriptions of case studies from both the Czech Republic and Norway.

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You will always have a ready help, which will tell you how to proceed, and which tools to prepare.

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