stani fil  stani fil

Research Instruments

Research Tools developed by MIND, OVID and academic partners


The Acceptance/Avoidance-Promoting Experiences Questionnaire (APEQ) is a psychometric self-report tool for measuring aspects of the acute psychedelic experience that are associated with longer-term changes in psychological flexibility.

English and German versions of the 32-item APEQ and the 12-item short form APEQ-S were validated with the data collected in the Psychedelic Experience Survey. The validation study is expected to be published in 2021.

A Spanish translation of the APEQ is currently being validated.

Click here to download paper-and-pencil versions of the APEQ and APEQ-S in English and German.



The General Change Mechanisms Questionnaire (GCMQ) is a tool to study mechanisms of change in psychedelic therapy.

It is currently being validated in the Survey on Psychedelic Experiences and Stressful Life Events. The survey is currently open for participation!


Once the GCMQ has been validated, it will be available for download here.