Type of record:
  • Reflection tool
  • Micro method
  • Feedback method
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Ideal innovation phases for this method:
  1. Innovation Phase
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. 10


The PMI according to de Bono is a very simple and very effective method to review and rethink prejudices, existing points of view or first impressions. PMI stands for Plus, Minus and Interests.

Through the structured concentration on the plus points, minus points and interests, one's own convictions are not strengthened, but individual characteristics of an assumption are collected and thus observed value neutrally.
It will then be much easier to make a decision/evaluation on the basis of an assessment that will very often be more rational than before the use of the PMI.

A point can be classified under both P and M, since there can be two points of view for an argument. By the way, interest refers to all those points that cannot be classified either positively or negatively. At the beginning the following sentence may be helpful: "It is interesting to know whether...".

The method is based on the EUI method (agreement, disagreement, irrelevance). The difference is that PMI highlights the characteristics of the idea, while EUI focuses on the importance for the team.
  • Effective for all innovation types
  • Effective for incremental innovations and improvements
  • Effective for low complex challenges
  • P7 Idea selection (voting - evaluation - filtering - deciding)
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