Collaborative Open-science and meta REsearch


Quick jump to sections: Who are we? / Team overviewProject summary / Get involved: Join us / Publications & preprints / Our team  / Completed replications  / Planned replications / How to cite us / Projects that used CORE


Project pages:


Who are we

We are a team of over 70 early-career researchers from around the world and over 400 students from Hong Kong aiming to practice and promote best-practices open-science and meta research. The team is coordinated by Gilad Feldman and based on his work with undergraduate students in his courses and guided thesis work with undergraduates and taught masters students (MSc).

Our main activities in the years 2018-2023 have been focused on: 1) Mass-scale project completing over 120 replications and extensions of classic findings in social psychology and judgement and decision making, 2) Building collaborative resources (tools, templates, and guides) to assist others in implementing open-science.


A 30 minutes introduction to the CORE team from a talk given to UCL in March 2024 (starts at 14:26):

CORE team open and meta science: Collaborative tools, replications, and assessments | UCL

A 45 minutes presentation (Exeter ReproducibiliTea, 2023) that also includes our shift towards Registered Reports and committing to submitting and supporting Peer Community in Registered Reports initiative (since 2021):

CORE team experience with over 150 open-science projects | Exeter ReproducibiliTea


Team overview presentations


A 3-hours workshop summarizing our 3 years of running the project and 100 replications milestone (January 2021):


Workshop: Summarizing 3 years of collaborative open science and meta research with students and ECRs


[A shorter 45 minutes version (ReproducibiliTea Oxford December 2020)]



Project summary

WARNING: Preliminary summarized findings, still need to be verified and peer-reviewed. Only the publications are verified.

WARNING: Outdated. As of November 2023, we’re at around 150 replications, and going strong. We’re working towards summarizing that.

Summary: (last update: January 2021):

mass pre registered replication project status update portrait poster

Download the poster: PDF / PNG




Get involved: Join us

Are you an open-science early-career researcher and want to join?

Please see our detailed guide on how to join this project.

If you have any questions, please feel free to contact me and consider joining our mailing list.


Publications & Preprints




Our team

A great team of open-science JDM Early Career Researcher collaborators joined us to finalize students’ reports for journal submissions:


Completed replications

WARNING: Preliminary student summarized findings, need to be rechecked and verified. Only publications are verified.

Note: Those completed replication projects in the table marked as “open” in grey are still available for you to join us and take lead.



Planned replications

Note: Those in the table marked as “RRS1 done, need lead” are completed Registered Report Stage 1 manuscripts, completed with simulated datasets and planned data analysis code, with ready manuscripts based on our templates, looking for leads ECRs to help us submit those to journals as Stage 1 and carry these all the way through an in-principle acceptance till a successful Stage 2 publication.

Still available for guided thesis students (Zotero collections): High priority, regular priority
(if you install Zotero you can easily import and browse those)


How to cite this project?

Please cite as the following:

CORE Team (2024). Collaborative Open-science and meta REsearch. DOI 10.17605/OSF.IO/5Z4A8. Retrieved from and

Projects that have used CORE team outputs

(will try and keep track of interesting projects I see that used our mass replications in some way)

  1. Reanalyses of 40 of our published replications to predict replication outcomes based on target article’s language patterns:
    Youyou, W., Yang, Y., & Uzzi, B. (2023). A discipline-wide investigation of the replicability of Psychology papers over the past two decades. Proceedings of the National Academy of Sciences, 120(6), e2208863120. doi: 10.1073/pnas.2208863120
  2. Brazilian team that took our replication, translated to Portugeuse and ran on Brazilian samples with almost 1 to 1 replications of our replication results. See more info on my “Check me, replicate me” page.
  3. A team took the data from 2 of our projects, and included this in the R swirl tutorial, amazing! : Carriere, K. R., Kilgore, J., & Geedy-Gill, T. (2023, October 3). Expanding R Through Accessible Interactivity: Development of tidy psychological statistics modules- SIPS Grants In Aid 2023. DOI: Retrieved from