One important way to strengthen research integrity is through supervision. This project aims to develop, validate, and pilot a measurement instrument for responsible supervision where PhD supervisors evaluate themselves and are evaluated by their PhD candidates. Responsible supervision is thought to have three core components: (1) the supervisor is well-versed in responsible research practices (RRPs), (2) the supervisor encourages his/her PhD candidates to apply RRPs, and (3) the supervisor creates a psychologically safe climate where mistakes can be discussed. However, there has been little investigation into RRPs and although psychological safety has been studied extensively, the majority is in settings outside academia. The measurement instrument will be developed using an innovative approach. Through focus groups, we will investigate which practices research say should be done to foster responsible research. We will then contextualise these practices through a scientometric study investigating which practices have been done. Meanwhile we will apply the facet method to develop items for psychological safety applicable to PhD supervision. The measurement instrument will be piloted alongside existing instruments to examine validity. We will apply factor analysis to select the best items. Lastly, we will disseminate the final measurement instrument among a representative sample to examine reliability.