Tools for Type S (Sign) and Type M (Magnitude) Errors R package retrodesign version 0.2.2 Provides tools for working with Type S (Sign) and Type M (Magnitude) errors, as proposed in Gelman and Tuerlinckx (2000) <doi:10.1007/s001800000040> and Gelman & Carlin (2014) <doi:10.1177/1745691614551642>. In addition to simply calculating the probability of Type S/M error, the package includes functions for calculating these errors across a variety of effect sizes for comparison, and recommended sample size given "tolerances" for Type S/M errors. To improve the speed of these calculations, closed forms solutions for the probability of a Type S/M error from Lu, Qiu, and Deng (2018) <doi:10.1111/bmsp.12132> are implemented. As of 1.0.0, this includes support only for simple research designs. See the package vignette for a fuller exposition on how Type S/M errors arise in research, and how to analyze them using the type of design analysis proposed in the above papers. Software Depends: R (>= 3.1.0) Imports: graphics Suggests: ggplot2, knitr, rmarkdown, gridExtra, testthat Andrew Timm <timmandrew1@gmail.com> Comprehensive R Archive Network (CRAN) Andrew Timm [cre, aut], Andrew Gelman [ctb, cph], John Carlin [ctb, cph], Martijn Weterings [ctb] MIT + file LICENSE (https://CRAN.R-project.org/package=retrodesign/LICENSE) 2024-03-28 application/tgz https://CRAN.R-project.org/package=retrodesign doi:10.32614/CRAN.package.retrodesign