The aims of the ReproducibiliTea initiative are to:

  1. increase awareness, knowledge and skills for open and reproducible science
  2. build an open science community, to help, learn from and support each other in our open science endeavors;
  3. assist in making regular (small) steps towards open & reproducible science.

The idea is to have regular meetings on any reproducibility related topic, from discussing bias in the literature, a work-session on preprints/preregistrations or a workshop on r-markdown or GitHub. What the contents will be exactly is to be decided by us all and will change from meeting to meeting. For a bit more background on the concept, including suggested reading materials see the official ReproducibiliTea OSF and the ReproducibiliTea Groningen OSF pages.

Previous Events (incomplete list, see also

Date LocationTimeRoomTopicComments
2022-05-23Hybride14.00-15.00(CET)Where: In person: H.0431 (Bouman Building) or Online (DM for link)Scientific Red Teams  
Guest speaker Leo Tiokhin
Scientific Red Teams
Red teams are groups of individuals who play the role of an adversary – attacking a system and revealing its weaknesses, with the ultimate goal of improving system functioning. In the last two years, our group has attempted to incorporate the concept of red teaming into scientific practice. We have conducted a range of projects in which diverse teams of independent scientists have received financial compensation to criticize scientific research. In this session, I will summarize our experiences implementing red teams in science and outline directions for future development. My goal is to stimulate a discussion about the costs and benefits of red teams, and the potential role of red teams in the future of scientific practice.
2022-03-28Hybride14.00-15.00(CET)Where: In person: B.128 (Bouman Building) or Online (DM for link)Open Science for the humanities, Guest speaker Federico PianzolaSuggested reading:  Schöch, C., van Dalen-Oskam, K., Antoniak, M., Jannidis, F., & Mimno, D. (2020, June 14). Replication and Computational Literary Studies. Digital Humanities Conference 2020 (DH2020), Ottawa, Canada.
2022-03-14Hybride14.00-15.00(CET)Where: In person: B.128 (Bouman Building) or Online (DM for link)Researcher’s Reflections and Conflicting Considerations Regarding Open Science – An Underestimated Decision Making Process – Guest speaker Nina SchwarzbachSuggested reading:  Tal Yarkoni – I hate Open Science [Blog]
2022-02-28Online14.00-15.00(CET) contact or 
@GroningenTea for the link
Questionable Research Practices in the Netherlands: the  Dutch National Survey on Research IntegrityGopalakrishna, G., et al. (2022). Prevalence of questionable research practices, research misconduct and their potential explanatory factors: A survey among academic researchers in The Netherlands. PLOS ONE, 17(2), e0263023.
2022-02-14Online14.00-15.00(CET) contact or 
@GroningenTea for the link
Timothy Errington on the challenges in the Reproducibility project: Cancer BiologyIn 2013 a group of researchers started the Reproducibility Project: Cancer biology, with the ambition to replicate a total of 193 experiments from 53 high-impact papers. After seven years, because of a multitude of obstacles they encountered, they were only able to repeat 50 experiments from 23 papers. In our next session one of these researchers will be our guest. Timothy Errington will discuss with us the (un)foreseen challenges in this major project and we are honored to have him. We will be talking about things that are at the core of reproducibility, so don’t miss out!

Suggested reading: Reproducibility in Cancer Biology: Challenges for assessing replicability in preclinical cancer biology | eLife (
2022-01-31Online14.00-15.00(CET)  contact or 
@GroningenTea for the link
Vera Heijninga on the University of Groningen Open Science ProgramVera  is program leader of the UG-wide Open Science Program, which kicked off in September 2021.The aim of this two-year program is to stimulate and integrate Open Science into the research and education culture of the University of Groningen. The program has five pillars: Open Access, FAIR Data and Software, Open Education and Public Engagement and Communication. Vera will introduce the program, and as always in our ReproTea meetings, there will be ample time for questions and discussion.
Suggested reading / background:
2022-01-17Online14.00-15.00(CET)  contact or 
@GroningenTea for the link
 Introducing the Framework for Open and Reproducible Research Training (FORRT)Azevedo et al (2021, preprint) Introducing the Framework for Open and Reproducible Research Training (FORRT),
2021-12-13Sign up for live attendance
or meet online. More info here
14.00-15.00(CET ) More info here On the use of preprintsGuest speaker: Gowry Gopalakrischna
2021-11-29 Sign up for live attendance
or meet online. More info here
14.00-15.00(CET ) More info here “Postregistration” How to minimize the effort of noting deviations from preregistrations.Guest speakers: Marton Kovacs and Balazs Aczel
2021-11-15 Sign up for live attendance
or meet online. More info here
14.00-15.00(CET ) More info here Misconceptions about pregistration and registered reports 
2021-10-18 Sign up for live attendance
or meet online. More info here
14.00-15.00(CET) More info here Sample size calculations: a game we play (Michiel de Boer)In this session Michiel de Boer will provide a short, provocative introduction about sample size calculations (also sometimes referred to as power calculations). He claims that the way we conduct sample size calculations currently is not much more than a ritual we have learned to play. Partly based on a recent manuscript by Daniel Lakens (2021) about justification of sample sizes (see suggested reading), he suggests a couple of ways forward, which will be open to further discussion.
Suggested reading: sample_size_justification/sample_size_justification.pdf at main · Lakens/sample_size_justification · GitHub
2021-9-20Sign up for live attendance
or meet online. More info here
14.00-15.00(CET) More info here Reset ReproTea (brainstorm about new themes for 2021-2022)
2021-6-17Online14:00-15:00Google MeetThe role of academic libraries in nudging open science – special guest: Giulia TrentacostiNudging Open Science paper:
2021-6-3Online11:00 – 12:00Google MeetDr. Serge Horbachh: Building a Myth or The importance of proper referencing
2021-5-20Online14:00-15:00Google MeetEditorial policies and open science: Special guests: Rafaele Huntjens, Kai EpstudeKai’s editorial:;
Rafaële’s editorial:;
Nudging Open Science paper:
2021-4-22Online14:00-15:00Google MeetWhy use Academic Twitter (or not)?
2021-4-8Online11:00 – 12:00Google MeetTheory crisis in psychology. Special guests Laura Bringmann and Markus Eronen
2021-3-25Online14:00-15:00Google MeetTransparency Audits for Science, good or bad?
2021-3-11Online11:00 – 12:00Google MeetHypothesis Testing
2021-02-25Online14:00 – 15:00Google MeetTowards a responsible research climate: Tamarinde Haven
2021-02-11Online11:00 – 12:00Google MeetReflexivity as an Open Science Tool
2021-01-28Online14:00 – 15:00Google MeetDoes Open Science make you leave academia?Reflections on my PhD and building sustainable science | by Chris Hartgerink | Medium
2021-01-14Online11:00 – 12:00Google MeetWhat would you do to improve open science (if you had 50.000 euros)?for background visit
2020-12-17Online14:00 – 15:00What is worth replicating?Isager et al. (2020)
2020 – 12-3Online11:00 – 12:00Open Access: worth the expense?
2020-11-19Online11:00 – 12:00Google MeetOpen Science and non-ECRsKowalczyk et al. (2020)
2020-11-05Online11:00 – 12:00Google MeetA sceptical view on Open ScienceMirowski (2018): The future(s) of open science
2020-03-05@UMCG*14:00 – 15.00K1.25Replicats: judging the replicability of published claimsMake an account on Replicats.
2020-02-27@BSS**11:00 – 12:00H.431Understanding open Science (Where to start?) Munafò et al. (2017)

*@UMCG: Triadebuilding, entrance 24

**@BSS: Heymans building, Grote Kruisstraat 2/1

Latest events and announcements: