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An R package for Bayes Factor Design Analysis

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BFDA Bayes factor design analysis

Installation

The BFDA package is not on CRAN yet, but you can install the development version from Github:

library(devtools)
install_github("nicebread/BFDA", subdir="package")

For installations on Windows the package requires R version 3.3.1 or higher.

How to use the BFDA package?

1. Read our papers:

  • Schönbrodt, F. D. & Wagenmakers, E.-J. (2018). Bayes Factor Design Analysis: Planning for compelling evidence. Psychonomic Bulletin & Review, 25, 128-142. doi:10.3758/s13423-017-1230-y. [PDF][OSF project with reproducible code]
  • Stefan, A. M., Gronau, Q. F., Schönbrodt, F. D., & Wagenmakers, E. (2018). A Tutorial on Bayes Factor Design Analysis with Informed Priors. PsyArXiv Preprint

If you use this package to compute and report your design analysis, please cite it as:

2. Read the additional manual.

Sequential Design

3. Look at published use cases of BFDA

We compile a (non-exhaustive) list of papers that user BFDA in practice: A list of published examples

Extending the BFDA package

If you want to implement a new test (e.g., a BFDA for regression or ANOVAs): The BFDA package uses a rather modular system for creating new tests. For new tests, you need to:

  1. Add a new file with 4 functions:
  • sample.function
  • select.function
  • BF.test.function
  • freq.test.function

Replace “function” with the test name, e.g.: sample.ANOVA etc.

  1. Add the new “type” (e.g., “ANOVA”) to the print.BFDA function in R/1-Simulation.R
  2. Add the new “type” (e.g., “ANOVA”) to the BFDA.sanityCheck function in R/10-SanityChecks.R
  3. Do a lot of testing!

Probably it is easiest to take one of the existing test implementations (e.g., R/t.between.R or R/correlation.R) and replace the name and the content of the functions.

If you implement a new test, please let us know. The preferred workflow would be that you fork the Github project, implement the test, do a lot of testing, and send us a pull request. If everything works as intended, we can add the test to the main project.

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An R package for Bayes Factor Design Analysis

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