In the Reproducibility Project, original study authors reviewed the materials and methods used by replication teams to help reproduce the original experiments as closely as possible.
Notes on verification
Confirmed by the original Science paper, a detailed methods write-up, a formal Comment in Science, and APA reporting. Nuance: not all original authors participated or endorsed protocols (~69%). [tier=silver indep_score=0.925 clusters=2 claim_tier=notable]
Sources
- A reproducibility crisis? - American Psychological Association (seed:psychology_and_neuroscience)
- https://www.science.org/doi/10.1126/science.aac4716 (corroboration)
- https://www.science.org/doi/10.1126/science.aad7243 (corroboration)
- https://eprints.lse.ac.uk/65169/1/Kappes_Reproducibility%20project_protected.pdf (corroboration)