JASP 0.8.6 Preview: Frequentist Chi-Square Test and Revamped Bayesian Regression

Soon we will release JASP 0.8.6. In this post we preview three important new features. 1. Frequentist Multinomial and Chi-Square Tests JASP 0.8.6 provides frequentist multinomial and chi-square tests. For count data, users can test whether the cell frequencies are equal (i.e., the multinomial test), but users are free to specify any pattern of expected frequencies (or probabilities) and test…

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A New Video on How to Perform a Logistic Regression Analysis in JASP

When trying to fit a regression model where the dependent variable is categorical, logistic regression is the weapon of choice. Implemented in JASP 0.8.3, logistic regression just got some nice upgrades in the latest version of JASP, 0.8.5. Logistic regression makes it possible to analyze and learn from data if your outcome variable is categorical in nature, such as whether…

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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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