ReplicationBF: An R-Package to calculate Replication Bayes Factors

Some months ago I’ve written a manuscript how to calculate Replication Bayes factors for replication studies involving F-tests as is usually the case for ANOVA-type studies.

After a first round of peer review, I have revised the manuscript and updated all the R scripts. I have a written a small R-Package to have all functions in a single package. You can find the package at my GitHub repository. Thanks to devtools and  Roxygen2, the documentation should contain the most important information on how to use the functions. Reading the original paper and my extension should help clarifying the underlying considerations and how to apply the RBF in a given situation.

I will update the preprint at arXiv soon too and add some more theoretical notes here on the blog about my perspective on the use of Bayes factors. In the meantime you might as well be interested in Ly et al.’s updated approach to the Replication Bayes factor, which is not yet covered in either my manuscript nor the R-package.

Please post bugs and problems with the R package to the issue tracker at GitHub.

New Preprint: A Bayes Factor for Replications of ANOVA Results

Already some weeks ago I have finished up some thoughts for a Replication Bayes factor for ANOVA contexts, which resulted in a manuscript that is available as pre-print at arXiv. The theoretical foundation was laid out before by Verhagen & Wagenmakers (2014) and my manuscript is mainly an extension of their approach. We have another paper coming up where we will use it to evaluate the success of an attempted replication of an interaction effect. Continue reading “New Preprint: A Bayes Factor for Replications of ANOVA Results”

New Paper: Impulsivity and Completion Time in Online Questionnaires

I’ve got my first first-author-paper published in Personality and Individual Differences. The paper is titled “Reliability and completion speed in online questionnaires under consideration of personality” (doi:10.1016/j.paid.2017.02.015) and was written together with Lina and ChristianContinue reading “New Paper: Impulsivity and Completion Time in Online Questionnaires”

ASA statement on p-Values: Improving valid statistical reasoning

A lot of debate (and part of my thesis) revolve around replicability and the proper use of inferential methods. The American Statistical Association has now published a statement on the use and the interpretation of p-Values (freely available, yay). It includes six principles and how to handle p-Values. None of them are new in a theoretical sense. It is more a symbolic act to remind scientists to properly use and interpret p-values.

Continue reading “ASA statement on p-Values: Improving valid statistical reasoning”