Publications by Richard Morey
What is a Bayes factor?
The BayesFactor packageThis blog is a companion to the BayesFactor package in R (website), which supports inference by Bayes factors in common research designs. Bayes factors have been proposed as more principled replacements for common classical statistical procedures such as \(p\) values; this blog will offer tutorials in using the package for ...
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Bayes factor t tests, part 1
In my first post, I described the general logic of Bayes factors. I will continue discussing the general logic of Bayes factor, while introducing some of the basic functionality of the BayesFactor package.Recap: What is a Bayes factor?The Bayes factor is the relative evidence provided by the data for comparing two statistical models. It has two e...
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Bayes factor t tests, part 2: Two-sample tests
In the previous post, I introduced the logic of Bayes factors for one-sample designs by means of a simple example. In this post, I will give more detail about the models and assumptions used by the BayesFactor package, and also how to do simple analyses of two- sample designs.See the previous posts for background:What is a Bayes factor?Bayes fact...
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BayesFactor update: 0.9.7.
BayesFactor version 0.9.7 has been released to CRAN. It does have a few bug fixes, so update soon. A list of changes can be found in the NEWS file. Related To leave a comment for the author, please follow the link and comment on their blog: BayesFactor: Software for Bayesian inference. R-bloggers.com offers daily e-mail updates ...
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BayesFactor version 0.9.8 released to CRAN
BayesFactor version 0.9.8 has been released on CRAN! This is a both a bug fix and feature update. From the NEWS: Fixed bugs in model enumeration code Fixed bug leading to wrong computation of number of covariate when interactions between continuous variables were included Corrected typos/old information in the documentation Fixe...
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Embedding RData files in Rmarkdown files for more reproducible analyses
For those of us interested in reproducible analysis, Rmarkdown is a great way of communicating our code to other researchers. Rstudio, in particular, makes it very easy to create attractive HTML document containing text, code, and figures, which can then be sent to colleagues or put on the internet for anyone to see. If you aren’t using Rmarkdo...
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New BayesFactor version 0.9.9 released to CRAN
Today I submitted a new release of BayesFactor, version 0.9.9, to CRAN. Among the new features are support for contingency table analyses, via the function contingencyTableBF, and analysis of a single proportion, via the function proportionBF. Other features and fixes include:Added “simple” argument to ttest.tstat, oneWayAOV.Fstat, and linear...
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Multiple Comparisons with BayesFactor, Part 1
On of the most frequently asked questions about the BayesFactor package is how to do multiple comparisons; that is, given that some effect exists across factor levels or means, how can we test whether two specific effects are unequal. In the next two posts, I’ll explain how this can be done in two cases: in Part 1, I’ll cover tests for equali...
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BayesFactor version 0.9.10 released to CRAN
If you’re running Solaris (yes, all zero of you) you’ll have to wait for version 0.9.10-1, due to a small issue preventing the Solaris package from building on CRAN. The rest of you can pick up the updated version on CRAN today.See below the fold for changes.CHANGES IN BayesFactor VERSION 0.9.10CHANGESFixed bug in model enumeration code in ge...
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On making a Bayesian omelet
My colleagues Eric-Jan Wagenmakers and Jeff Rouder and I have a new manuscript in which we respond to Hoijtink, van Kooten, and Hulsker’s in press manuscript Why Bayesian Psychologists Should Change the Way they Use the Bayes Factor. They suggest a method for “calibrating” Bayes factor using error rates. We show that this meth...
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