In the Open Science Collaboration's 2015 replication project, only about 36% of 100 replicated psychology studies produced statistically significant results similar to the originals.
Sources
- Replication Crisis in Psychology, Second-Order Cybernetics ... - PMC (pmc.ncbi.nlm.nih.gov)
- https://www.science.org/doi/10.1126/science.aac4716 (science.org)
- https://osf.io/ezcuj/overview (osf.io)
- https://www.tandfonline.com/doi/full/10.1080/01621459.2016.1240079 (tandfonline.com)
- https://casrai.org/guides/psychology-replication-crisis (casrai.org)
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