A code of best practice for judgement‐based operational research

Judgement‐based (or ‘soft’) Operational Research (OR) is used in Defence, although it may not be well known and understood and it may not be perceived to have the rigour of more quantitative techniques. A NATO task group was set up to address these features and to produce a Code of Best Practice with the purpose of: creating an understanding of judgement‐based OR, clarifying when and how it can be used, and providing guidance on how the critical features of validity, credibility and acceptance can be achieved. Two distinct volumes were produced: one directed towards the analysts and the other towards the clients. We propose that a sound process be followed with due diligence and that this will provide the evidence needed to protect the client from criticism. The article describes the motivation behind the project, the products and some reflections on judgement‐based OR.