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If you have any questions or concerns about the study, please feel free to contact the researcher. Information about your participation, including your rights and the nature of the study, can be found in the Teilnehmendeninformationen document you received at the beginning of the experiment.

Please click this link. It forwards you to enter your payment details. The payment information is always stored separate from your research data.
https://survey.iism.kit.edu/index.php/329721?lang=de&studyid=202505MEDH