Theory and Practice of Bayesian Hypothesis Testing: A Hybrid JASP Workshop in Amsterdam

The JASP Team is excited to announce that registration for our annual two-day hybrid Amsterdam workshop is now open. The workshop will be happening both on-site and via Zoom and it takes place on August 29–30, 2022. Program In this two-day workshop, plenary lectures provide the theoretical background of Bayesian statistics and Bayesian hypothesis testing; in addition, practical exercises demonstrate…

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Henri Poincaré: Unconscious Thought Theory Avant la Lettre

Known as “the last universalist”, Henri Poincaré (1854-1912) made numerous contributions to mathematics and physics. He was also a philosopher of science who published three accessible and highly recommended books on science: “Science and Hypothesis”, “The Value of Science”, and “Science and Method” – this trilogy is now available as “The Foundations of Science”. In “Science and Method”, the chapter…

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A Deterministic View on Life

Many people believe that the future is partly in their own hands. We can usually choose freely whether to watch TV, or read a book, or go to the movies; we decide where to go on vacation, what to eat, whom to marry, and so on. There appears to be no external authority who commands us in such decisions, big…

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From p-values to Bayes Factors with 3p√n

This post is a teaser for Wagenmakers, E.-J. (2022). Approximate objective Bayes factors from p-values and sample size: The 3p√n rule. Preprint available on ArXiv: https://psyarxiv.com/egydq Abstract “In 1936, Sir Harold Jeffreys proposed an approximate objective Bayes factor that quantifies the degree to which the point-null hypothesis H0 outpredicts the alternative hypothesis H1. This approximate Bayes factor (henceforth JAB01) depends…

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A Many-Analysts Approach to the Relation Between Religiosity and Well-being

This post is an extended synopsis of two papers: The MARP Team (2022). A Many-Analysts Approach to the Relation Between Religiosity and Well-being. Preprint available on PsyArXiv: https://psyarxiv.com/pbfye/. Sarafoglou, Hoogeveen & Wagenmakers (2022). Comparing Analysis Blinding With Preregistration In The Many-Analysts Religion Project. Preprint available on PsyArXiv: https://psyarxiv.com/6dn8f/.  Summary The relation between religiosity and well-being is one of the most…

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Everything You Always Wanted to Know About the Jeffreys-Lindley Paradox But Were Afraid to Ask

This post is a teaser for Wagenmakers, E.-J., & Ly, A. (2020). History and nature of the Jeffreys-Lindley paradox. Preprint available on ArXiv: https://arxiv.org/abs/2111.10191 Abstract “The Jeffreys-Lindley paradox exposes a rift between Bayesian and frequentist hypothesis testing that strikes at the heart of statistical inference. Contrary to what most current literature suggests, the paradox was central to the Bayesian testing…

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Adjusting for Publication Bias with JASP & R

This post is a synopsis of Bartoš, F., Maier, M., Quintana D. S., & Wagenmakers, E. (2021). Adjusting for Publication Bias in JASP & R — Selection Models, PET-PEESE, and Robust Bayesian Meta-Analysis. Preprint available at https://doi.org/10.31234/osf.io/kvsp7     Abstract Meta-analyses are essential for cumulative science, but their validity can be compromised by publication bias. In order to mitigate the…

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