Open Science and Free Culture

I am committed to practices of open and good science, and more generally to free culture. As such, I am a signatory of the Peer Reviewers’ Openness Initiative, the Commitment to Research Transparency, and the Public Domain Manifesto. The text below summarises the commitments I am making in my work as an author, reviewer, supervisor, and teacher.

As Author

1. Open Data: Whenever possible, I publish, for every first-authored empirical publication, all raw data which are necessary to reproduce the reported results on a reliable repository with high data persistence standards (such as the Open Science Framework). (CRT)

2. Reproducible scripts: For every first authored empirical publication I publish reproducible data analysis scripts, and, where applicable, reproducible code for simulations or computational modeling. (CRT)

3. I provide (and follow) the “21-word solution” in every empirical publication: “We report how we determined our sample size, all data exclusions (if any), all manipulations, and all measures in the study.” If necessary, this statement is adjusted to ensure that it is accurate. (CRT)

4. Whenever possible, I preregister hypotheses and analyses for confirmatory studies. In publications, I report alterations to intended analysis protocols and clearly label exploratory analyses as such.

5. I provide open access to my publications, data, materials, and code. For publications, this may be through publication in an open access journal (gold OA) or through sharing of pre-print versions on a repository (green OA).

6. My work, including papers, data, materials, and code, is licensed in such a way that it can be used, shared, and modified by others.

As co-author

7. As co-author I try to convince the respective first authors to act according to points 1-6. (CRT)

As reviewer

I will not offer comprehensive review for, nor recommend the publication of, any manuscript that does not meet the following minimum requirements:

8. All data needed for evaluation and reproduction of the published research are made publicly available, online, hosted by a reliable third party. (PRO)

9. Stimulus materials, experimental instructions and programs, survey questions, and other similar materials are made publicly available, hosted by a reliable third party. (PRO)

10. In case some data or materials are not open, clear reasons (e.g., legal, ethical constraints, or severe impracticality) are given why. These reasons should be outlined in the manuscript. (PRO)

11. Documents containing details for interpreting any files or code, and how to compile and run any software programs should be made available with the above items. In addition, licensing or other restrictions on their use should be made clear. (PRO)

12. The location of all of these files should be advertised in the manuscript, and all files should be hosted by a reliable third party. The choice of online file hosting should be made to maximize the probability that the files will be accessible for many years, and to minimize the probability that they will be lost for trivial reasons (e.g., accidental deletions, moving files). (PRO)

13. I add the “standard reviewer disclosure request”, if necessary ( It asks the authors to add a statement to the paper confirming whether, for all experiments, they have reported all measures, conditions, data exclusions, and how they determined their sample sizes. (CRT)

As supervisor

14. As supervisor I put particular emphasis on the propagation of methods that enhance the informational value and the replicability of studies. From the very beginning of a supervisor-student relationship I discuss these requirements explicitly. (CRT)

15. Whenever possible, I work with students to preregister hypotheses and analyses for confirmatory studies. In student work (such as theses), I expect that students report alterations to intended analysis protocols and clearly label exploratory analyses as such.

16. If student projects result in publications, I expect that they follow points 1 to 3. (CRT)

17. The grading of the final student project is independent of the studies’ statistical significance. (CRT)

As teacher

18. As a teacher, I put particular emphasis on the propagation of the values of openness, transparency, and free culture, and of methods that enable students to implement these values in academic and professional practice.