## Six rules of thumb

The GDPR is based on six principles, also referred to as rules of thumb. It is important for researchers to keep these rules of thumb in mind in every phase of the study. Applying these rules of thumb consistently, reduces the risk of errors while dealing with personal data.

### Six questions

Below are the six rules of thumb each with an associated question. If during the study the answer to one of these questions is ‘no’ you will have to adjust your study. For instance, informing the persons involved (‘Transparency’), destroying the personal data (‘Storage limitation’) or asking for an age range instead of a year of birth (‘Data minimisation’).

Read through the six rules of thumb before trying to answer the questions below correctly: