Zenodo (CERN European Organization for Nuclear Research)
February 23, 2026
Parker Singleton, Brooke L. Sevchik
A meta-analytic research domain (MARD) on MDMA therapies for adults with post-traumatic stress disorder has been compiled as part of the Metapsy project. The dataset includes comparisons of MDMA therapy versus control conditions, with effect sizes for outcomes at post-test and long-term follow-ups. Data extraction was performed independently by two researchers, and risk of bias was assessed using the Cochrane Collaboration Risk of Bias Tool (Version 2). This living database was developed by the Synthesis of Psychedelic Research Studies (Sypres) Collaboration.
Zenodo (CERN European Organization for Nuclear Research)
November 20, 2025
Parker Singleton, Mathias Harrer, Brooke Sevchik
A meta-analytic dataset on psilocybin-assisted therapies for adults with depressive symptoms, part of the Metapsy project, compares psilocybin therapy against control conditions. Effect sizes are reported for post-test and long-term follow-up outcomes. Data were independently extracted by two researchers, and risk of bias was assessed using the Cochrane Risk of Bias Tool (Version 2). The dataset is maintained by the Sypres Collaboration and follows the Metapsy data standard.
Zenodo (CERN European Organization for Nuclear Research)
November 18, 2025
Parker Singleton, Mathias Harrer, Brooke Sevchik
A meta-analytic dataset on psilocybin-assisted therapies for adults with depressive symptoms is described. It compares psilocybin therapy against control conditions, providing effect sizes for outcomes at post-test and long-term follow-ups. The dataset follows the Metapsy data standard, with information independently extracted by two researchers and risk of bias assessed using the Cochrane Collaboration Risk of Bias Tool (Version 2). It is part of the living Sypres Collaboration database.
Zenodo (CERN European Organization for Nuclear Research)
November 16, 2025
Mathias Harrer, Parker Singleton, Brooke Sevchik
A meta-analytic research dataset on psilocybin-assisted therapies for adults with depressive symptoms has been created as part of the Metapsy project. The dataset includes comparisons of psilocybin therapy against control conditions, with effect sizes for outcomes at post-test and long-term follow-ups. Information was independently extracted by two researchers, and risk of bias was assessed using the Cochrane Risk of Bias Tool (Version 2).