Bayes Factors for Research Workers: Video of a PhD Defence

To obtain the title of doctor at a Dutch university, a PhD candidate has to publicly defend his or her dissertation. This comes with certain traditions that I’d to share my thoughts on. But before I do, here’s the link to my layman’s talk my PhD defence Until recently, only full professors had the legal right to promote a “drs”…

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Interview with a Team Member: Frans Meerhoff

In our series Interview With A Team Member, we aim to introduce the people behind the JASP project. Today we are interviewing Frans Meerhoff, one of our software developers.   Frans Meerhoff is a software developer. He is responsible for the core development of JASP. To contact Frans, you can send him an e-mail   What is your professional background? I studied…

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Softpedia Review & Award for JASP

Last week the JASP team received an Email that made our day [after we confirmed it wasn’t spam :-)]. The Email informed us that JASP has been added to Softpedia’s database of software programs for Windows. Written by one of the Softpedia editors, the detailed and positive review features a description text, screenshots, download links, and technical details. You can…

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Link to My Thesis and Hopefully a New PhD at JASP

This Friday, the 19th of January, I will defend my PhD thesis titled “Bayes Factors for Research Workers” at the University of Amsterdam. You can download the dissertation from: the UvA repository, or my personal website The cover is illustrated by Viktor Beekman and depicts Harold Jeffreys leading the empirical sciences forward. The title is a reference to both Ronald…

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How to Conduct a Classical One-Sample T-Test in JASP and Interpret the Results

The one-sample t-test is used to answer the question of whether a population mean is the same as a specified number, also called the test value. This blog post shows how to perf-orm the classical version of the one-sample t-test in JASP. Let’s consider an example. Testing the Effect of Overeating on Weight Gain Our example dataset stems from a…

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New Version: JASP 0.8.5

JASP 0.8.5 is now available on our download page. This version provides a relatively modest update: More functionality for the network module Simple main effects for ANOVA Replacement of p-value-based stepwise logistic regression with AIC-based variable selection Improvements for the ODS importer Fixes for several issues kindly pointed out to us on the JASP GitHub page Waiting in the wings…

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A New Video on How to Perform a Network Analysis in JASP

The most recent release of JASP (0.8.4) contains several new features, one of which is the network module. This module makes it possible to perform extensive network analyses on your data and produce informative plots and tables. Today, we uploaded an introductory video to our YouTube channel that explains how to perform a network analysis in JASP. To follow along…

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Interview with a Team Member: Alexandra Sarafoglou

In our series Interview With A Team Member, we aim to introduce the people behind the JASP project. Today we are interviewing Alexandra Sarafoglou, who is an analyst and part of our marketing team. Alexandra Sarafoglou is a PhD candidate at the Psychological Methods group at the University of Amsterdam. At JASP, she contributes to the analyses and the video tutorials on the…

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A Combi-Ticket for the Two Summer Workshops in Amsterdam

Shave 100 euros off the total price for the JASP and cognitive modeling workshops with our combi-ticket. Register here to choose the combi-ticket option. If you already registered for one of the workshops and want to use the combi-ticket, contact us at info@jasp-stats.org. Register Now Prices: Combi-Ticket Early birds (completed registration before April 15th, 2018): (PhD-)student: 550 euro Faculty: 750…

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Bayesian Modeling for Cognitive Science: A Workshop in Amsterdam

We are delighted to announce that registration is now open for the annual Amsterdam workshop on probabilistic modelling for cognitive science. The eighth installment of this workshop takes place August 20-24, 2018. Program In this workshop, plenary lectures provide the theoretical background of Bayesian statistics, and practical computer exercises teach participants how to use the popular JAGS and WinBUGS programs…

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

The JASP Team is excited to announce that registration for our annual two-day Amsterdam workshop is now open. The fourth installment of this workshop takes place on August 27-28, 2018. Program In this two-day workshop, plenary lectures provide the theoretical background of Bayesian statistics and Bayesian hypothesis testing; in addition, practical exercises demonstrate how the JASP program is applied to…

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