8 Replication and meta-research
7 sub-clusters · 82 referencesAttainment of a grounding in 'replication research', which takes a variety of forms, each with a different purpose and contribution. Replicable science requires replication research. When teaching, students should understand the purpose and need of replications in its variety of forms and be able to conduct (and join) replication projects. There are 6 sub-clusters which aim to further parse the learning and teaching process:[ag][ah]
A replication study seeks to repeat findings of previous research using identical or similar methods to determine if consistent results can be obtained. Limits can arise from protocol drift, differences in context or measurement, and low power.
Direct replications use the exact same methods and materials, while conceptual replications test the same concept but with different methods, materials, or both. There is an ongoing debate as to how “direct” a replication can possibly be.
Meta-analysis pools estimates to show the bigger picture. Careful work starts with a prespecified plan, aligns effect sizes, and checks bias and sensitivity. It reports heterogeneity and uses prediction intervals to show what a future study might find. Data and code are shared so the synthesis can be audited and updated.
Meta-research studies how research is done. It maps power, bias, reporting quality, and the uptake of open practices. It tests which interventions improve credibility and efficiency. The aim is practical guidance that helps fields do better work and waste less effort. Findings are shared openly so policies, training, and incentives can respond.
Explains the diverse aims of replication and clarifies that “failure” is not a verdict on truth but evidence about effect size, robustness, and conditions. Encourages nuanced interpretation (e.g., meta-analytic and design-aware) over binary success/failure narratives and highlights responsible communication of discrepant findings.
Registered Reports are studies that are peer-reviewed prior to data collection, with an agreement between the journal and the author(s) that it will be published regardless of outcome as long as the preregistered methods are reasonably followed. Registered REPLICATION Reports are a special category of these that only include replications.
Sometimes responses to replication research can be negative. Failed replications of famous work, most notably power posing, ego depletion, stereotype threat, and facial feedback[ai][aj], have received a lot of attention.