
Nullius in Verba
Nullius in Verba is a podcast about science—what it is and what it could be. It is hosted by Smriti Mehta from UC Berkeley and Daniël Lakens from Eindhoven University of Technology.
We draw inspiration from the book Novum Organum, written in 1620 by Francis Bacon, which laid the foundations of the modern scientific method. Our logo is an homage to the title page of Novum Organum, which depicts a galleon passing between the mythical Pillars of Hercules on either side of the Strait of Gibraltar, which have been smashed by Iberian sailors to open a new world for exploration. Just as this marks the exit from the well-charted waters of the Mediterranean into the Atlantic Ocean, Bacon hoped that empirical investigation will similarly smash the old scientific ideas and lead to a greater understanding of the natural world.
The title of the podcast comes from the motto of the Royal Society, set in typeface Kepler by Robert Slimbach. Our theme song is Newton’s Cradle by Grandbrothers.
Latest episodes

Jun 2, 2023 • 1h 7min
Episode 9: Praeiudicium Publicandi
In this episode, we discuss the issue of publication bias. We discuss issues like: Do we learn anything from null results, given the current state of research practices? Is poorly done research still worth sharing with the scientific community? And how can we move toward a system where null results are informative and worth publishing?
Shownotes
Bones, A. K. (2012). We Knew the Future All Along Scientific Hypothesizing is Much More Accurate Than Other Forms of Precognition—A Satire in One Part. Perspectives on Psychological Science, 7(3), 307–309. https://doi.org/10.1177/1745691612441216
Carter, E. C., & McCullough, M. E. (2014). Publication bias and the limited strength model of self-control: Has the evidence for ego depletion been overestimated? Frontiers in Psychology, 5. https://doi.org/10.3389/fpsyg.2014.00823
Greenwald, A. G. (1975). Consequences of prejudice against the null hypothesis. Psychological Bulletin, 82(1), 1–20. https://doi.org/10.1037/h0076157
Fidler, F., Singleton Thorn, F., Barnett, A., Kambouris, S., & Kruger, A. (2018). The epistemic importance of establishing the absence of an effect. Advances in Methods and Practices in Psychological Science, 1(2), 237-244.
Pickett, J. T., & Roche, S. P. (2017). Questionable, Objectionable or Criminal? Public Opinion on Data Fraud and Selective Reporting in Science. Science and Engineering Ethics, 1–21. https://doi.org/10.1007/s11948-017-9886-2
Scheel, A. M., Schijen, M. R. M. J., & Lakens, D. (2021). An Excess of Positive Results: Comparing the Standard Psychology Literature With Registered Reports. Advances in Methods and Practices in Psychological Science, 4(2), 25152459211007468. https://doi.org/10.1177/25152459211007467
Sterling, T. D. (1959). Publication Decisions and Their Possible Effects on Inferences Drawn from Tests of Significance—Or Vice Versa. Journal of the American Statistical Association, 54(285), 30–34. JSTOR. https://doi.org/10.2307/2282137
The FDA Trial tracker to see which trials have not shared their results: https://fdaaa.trialstracker.net/

May 19, 2023 • 1h 3min
Episode 8: Scientia Cultus Sarcinarum
In this episode, we discuss physicist Richard Feynman’s famous speech ‘Cargo Cult Science,’ which refers to work that has all the affectations of science without the actual application of the scientific method. We also discuss topics like: What is pathological science? How might cargo cult science and pathological be different from pseudo-science? How do we know whether or not we’re in a cargo cult, and what can we do to make sure we're not fooling ourselves?
Shownotes
Cargo Cult Science (Feynman, 1974)
Gergen, K. J. (1973). Social psychology as history. Journal of personality and social psychology, 26(2), 309–320.
Langmuir, I. (1989). Pathological science. Research-Technology Management, 32(5), 11-17.
Sabine Hossenfelder. No one in physics dare say so, but the race to invent new particles is pointless. The Guardian.
Young, P. T. (1932). Relative food preferences of the white rat. Journal of Comparative Psychology, 14(3), 297.
Young, P. T. (1941). The experimental analysis of appetite. Psychological Bulletin, 38(3), 129.

May 12, 2023 • 23min
Prologus 8: Cargo Cult Science (R.P. Feynman)
In this bonus episode, we present a reading of the famous speech by physicist Richard Feynman on "science that isn't science," Cargo Cult Science, which will be the topic of the next episode. Enjoy.

May 5, 2023 • 58min
Episode 7: Corpora Regulatoria
In this episode we discuss regulatory bodies their influence on the generation and dissemination of knowledge. Should regulatory bodies have the authority to affect the topics and methods of science? Is more highly regulated research actually better? And should we just give up on our own lines of research and become potato researchers?
Shownotes
Kitcher, P. (2001). Science, truth, and democracy. Oxford University Press.
Indian Council of Agricultural Research (ICAR)-Central Potato Research Institute (CPRI)
Emergence of the NIH
DARPA SCORE
Lakens, D. (2023). Is my study useless? Why researchers need methodological review boards. Nature, 613(7942), 9-9.
PSA: Legate, N., Ngyuen, T. V., Weinstein, N., Moller, A., Legault, L., Vally, Z., ... & Ogbonnaya, C. E. (2022). A global experiment on motivating social distancing during the COVID-19 pandemic. Proceedings of the National Academy of Sciences, 119(22).

Apr 21, 2023 • 52min
Episode 6: Consentio
In this episode, we discuss the importance of consensus in science, both as means of establishing true knowledge and for determining which research questions might be worth pursuing. We also discuss barriers to reaching consensus and the different frameworks that are currently employed for trying to reach consensus among important stakeholders.
Shownotes
The Popper quote is from: Popper, K. R. (1959). The logic of scientific discovery. Routledge.
The Polanyi quote is from: Polanyi, M. (1950). Freedom in Science. Bulletin of the Atomic Scientists, 6(7), 195–198. https://doi.org/10.1080/00963402.1950.11461263
Planck's Principle: A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die and a new generation grows up that is familiar with it.
The Many Smiles collaboration: Coles, N. A., et al., (2020). The Many Smiles collaboration: A multi-Lab foundational test of the facial feedback hypothesis. Nature Human Behaviour. https://doi.org/10.31234/osf.io/cvpuw
Paul Meehl's 50 year rule: Meehl, P. E. (1992). Cliometric metatheory: The actuarial approach to empirical, history-based philosophy of science. Psychological Reports, 71, 339–339.
Mulkay, M. (1978). Consensus in science. Social Science Information, 17(1), 107-122.
Deliberative Polling
Laudan, L. (1986). Science and values: The aims of science and their role in scientific debate. Univ of California Press.

Apr 7, 2023 • 1h 3min
Episode 5: Insanabile Scribendi Cacoethes
In this episode, we discuss the insatiable itch to publish, starting with a quote from 1927 by sociologist Clarence Case on the dictum “Publish or perish.” We discuss ways in which individual goals to publish conflict with the broader scientific goal of producing useful knowledge. We also question the assumptions behind the notion that publishing less would be beneficial for science.
Shownotes
Case, C. M. (1927). Scholarship in sociology. Sociology and Social Research, 12, 323-340 (Publish or perish)
Phaf, R. H. (2020). Publish less, read more. Theory & Psychology, 30(2), 263–285. https://doi.org/10.1177/0959354319898250
The term "insanabile scribendi cacoethes" comes from: Merton, R. K. (1968). The Matthew effect in science: The reward and communication systems of science are considered. Science, 159(3810), 56-63.

Mar 24, 2023 • 59min
Episode 4: Eminentia
In this episode, we discuss the role of eminence in science. What ask questions like: What makes scientists eminent? What role does eminence play in science? Can eminence be spread across scientific teams instead of individuals? And how can we recognize and applaud scientists for their contributions, while avoiding conferring too many benefits on scientists who do become eminent?
Shownotes
Eminent psychologists of the 20th century
Intel - Our rock stars aren't like your rock stars

10 snips
Mar 10, 2023 • 1h 2min
Episode 3: Confirmatio Praeiudicia
In our third episode, we discuss confirmation bias, which affects not only how scientists generate and test their own hypotheses, but also how they evaluate the scientific evidence presented by others. We discuss guardrails against confirmation bias that are already in place, and others that could potentially improve scientific practice if adopted.
Shownotes
Wason, P. C. (1960). On the failure to eliminate hypotheses in a conceptual task. Quarterly Journal of Experimental Psychology, 12(3), 129-140.
Nickerson, R. S. (1998). Confirmation bias: A ubiquitous phenomenon in many guises. Review of General Psychology, 2(2), 175-220.
Mellers, B., Hertwig, R., & Kahneman, D. (2001). Do frequency representations eliminate conjunction effects? An exercise in adversarial collaboration. Psychological Science, 12(4), 269-275.
Coles, N. A., March, D. S., Marmolejo-Ramos, F., Larsen, J. T., Arinze, N. C., Ndukaihe, I. L., ... & Liuzza, M. T. (2022). A multi-lab test of the facial feedback hypothesis by the many smiles collaboration. Nature Human Behaviour, 1-12.
Dutilh, G., Sarafoglou, A., & Wagenmakers, E. J. (2021). Flexible yet fair: Blinding analyses in experimental psychology. Synthese, 198(23), 5745-5772.
Sarafoglou, A., Hoogeveen, S., & Wagenmakers, E. J. (2023). Comparing analysis blinding with preregistration in the many-analysts religion project. Advances in Methods and Practices in Psychological Science, 6(1), 25152459221128319.
Faster-than-light neutrino anomaly

Mar 3, 2023 • 1h 6min
Episode 2: Scepticismus
The podcast discusses the role of skepticism in science, the impact of skepticism on scientific research, and the problem with most published research findings. They explore the various forms of skepticism, the motivations behind skepticism in the field, and the concept of selective skepticism. The episode emphasizes the importance of teaching skepticism in education to improve work and trust in literature.

26 snips
Feb 24, 2023 • 56min
Episode 1: Motivus
In our first episode, we discuss a quote from the preface to The Instauratio Magna (of which Novum Organum is a part), in which Bacon claims that scientists should be motivated to do science for the betterment of mankind, and not for personal motives like fame, fortune, or even fun.
Here is the tweet (by Heidi Seibold) on academia not being aligned with good scientific practices.
An unedited transcript of the episode can be found here.