The first version of SPSS was published 59 years ago. The first version of JASP was published three years ago. How does an expensive IBM-developed program compare to the free and open source program which was until recently just developed by a handful of scientists? My approach for this review is as a university lecturer in psychology. Ease of learning…
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As discussed on the Bayesian Spectacles blog, some statisticians have an visceral dislike of the point-null hypothesis, fueled in part by the conviction that the point-null is never true. Back in 1938, Berkson (pp. 526-527) already summarized the argument: “I believe that an observant statistician who has had any considerable experience with applying the chi-square test repeatedly will agree with…
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The latest JASP version, 0.8.3, introduced a plethora of new features, including hierarchical regression. This blog post briefly describes this analysis. In traditional linear regression, predictors are selected that form a statistical model; this model is then compared to the null model that includes only the intercept term. Performance of the specified model is then assessed by metrics such as…
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We are happy to report that JASP 0.8.3 is now ready for download. Some of the new features have already been discussed in our previous post. Specifically, JASP 0.8.3 now includes logistic regression, hierarchical regression (i.e., the stepwise addition of predictors), a progress bar, and much more. Improvements in 0.8.3 Added logistic regression Added hierarchical regression Added progress bar to…
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The JASP team is in the final stages of testing the upcoming version, which is scheduled for release next week. The upcoming version, 0.8.3., contains many new features. My personal favorites: JASP 0.8.3 includes frequentist logistic regression (hat tip to the hmeasure R package for the confusion matrix diagnostics; Anagnostopoulos, Hand, & Adams, 2012). Kudos to Erik-Jan van Kesteren for…
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We are happy to report that, just last week, Utrecht University installed JASP on its central IT system, making it instantly available to all of its students and staff. Through the UU platform ‘MyWorkplace’, it is now possible to access JASP anywhere, anytime, and from any device, both on campus and at home. Utrecht University is one of the largest…
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In our series Interview With A Team Member, we aim to introduce the people behind the JASP-project. Today we are interviewing Don van den Bergh, one of our analysts! Don is an analyst at JASP and responsible for the frequentist and Bayesian reliability analysis, the machine learning module, and the network module. What is your professional background? After highschool…
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John Tukey is famous. In his youth he coined the term “bit” (as an abbreviation of “binary information digit”), later he promoted exploratory data analysis, and throughout his entire life he worked on a broad range of statistical techniques, some of which carry his name. In 1991, Tukey published the article “The philosophy of multiple comparisons”. The paper starts with…
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In a previous blog post I mentioned an open letter that a group of 27 social psychologists, methodologists, and advocates for open science had sent to Dr. Shinobu Kitayama, incoming editor of Journal of Personality and Social Psychology: Attitudes and Social Cognition (JPSP:ASC). The letter was motivated by a recent editorial in JPSP:ASC in which Dr. Kitayama stated his desire…
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This week the JASP team organized their third annual workshop in Amsterdam. Below you’ll find some of the highlights. A select set of course materials is here. The plenary lectures were given by Richard Morey and E.J. Wagenmakers; special thanks goes out to Johnny van Doorn for dealing with the logistics, and to Quentin Gronau for helping out in general. The…
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Released this week, JASP version 0.8.2.0 brings a number of improvements. For data visualization, the most prominent advance is the extension of the “split-by” functionality (courtesy of JASP team member Erik-Jan van Kesteren). To demonstrate how it works, we plot data from a study conducted at the University of Melbourne in the 1970s, examining the possible relation between hair color…
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