Want to check whether (parts of) submitted papers, essays and theses have been copied from others? Turnitin compares the content of submitted papers and theses with previously submitted papers and with public sources on the internet. 

Please note that this is not about detecting the use of GenAI like ChatGPT.

• The Brightspace support page explains how to use Turnitin. There is also an explanatory video.
• Manual of Turnitin, including how you should interpret the similarity report.
• For more information about plagiarism and the correct handling of citations, please consult the plagiarism guidelines.
• Want to inform your students about plagiarism? Refer them to the ‘’using sources correctly’’ module on the Science Skills Platform. E-mail skills@science.leidenuniv.nl for more information and help.