Universiteit Leiden

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Graduate School of Humanities

Scientific Integrity

Scientific integrity is an important element in the PhD trajectory, and is addressed in several different settings.

New PhD candidates sign the Code of Conduct on Academic Integrity, they take a course on scientific integrity, and the PhD degree award ceremony comes with an explicit exhortation to heed the obligations to society and to science that the degree entails.

Scientific integrity course for PhD candidates

The course consists of an online lecture to be viewed at your convenience, followed by a 90-minute workshop at institute level. The workshop is offered once or twice yearly.


The lecture is available here: https://edu.nl/cnqtn

This edition will remain online until it is replaced by a subsequent edition.

Please contact your institute’s management for more information about the workshop.

For whom

All PhD candidates are encouraged to attend. Attendance is mandatory for those who enrolled on or after 1 January 2019, preferably during the early stages of their research. Please visit the course information page to register for the online lecture. Important note: This is a necessary step for registration in Converis GSM. Proof of attendance of the workshop, such as a confirmation email from the workshop lecturer, must be uploaded in Converis GSM (under “followed courses”).

External PhD candidates who cannot attend the institute workshop may request an exemption from their supervisor, and discuss scientific integrity in relation to their own work in a meeting with their supervisor. A report of this meeting must be uploaded in Converis GSM (also under “followed courses”).


Please visit the course information page to register for the online lecture. You will receive an email from your institute about the workshop.


You may register the workload for 15 hours upon completing all parts (lecture and preparation: 10 hours, workshop and/or discussion with your supervisor and reflection on own research: 5 hours).

Ethics Committe

The ethics committee of the Faculty of Humanities gives binding advice on ethical issues in research. Using the checklist, researchers are to determine whether their research needs to be presented to the committee for an ethics review. If your research has important social science components, you may consider contacting the ethics committee of the Faculty of Social and Behavioural Sciences instead; please discuss this with your supervisors.

More information

For more information on academic integrity, regulations and procedures, the committee and confidential adviser for academic integrity, please visit the university’s web page on academic integrity.

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