Is formulative testing always required


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As I read IEC 62366-1 2015 it does not mandate that formative testing is required. In particular clauses 5.2-5.4 require you to identify use errors etc but as far as I can make out it does not mandate formative testing. Is this interpretation correct and if so when is formative testing required?


Marcelo Antunes

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Staff member
Yes, there's no requirement that formative tests are performed, only summative tests are required to be performed as a way to "validate" the usability of the user interface at the end of the process.

Formative tests are important in a HFE/Usability engineering process as a way to identify as quickly as possible, before taking design and development some decisions, usability shortcomings.

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