afex: Analysis of Factorial Experiments

Provides convenience functions for analyzing factorial experiments using ANOVA or mixed models. aov_ez(), aov_car(), and aov_4() allow specification of between, within (i.e., repeated-measures), or mixed between-within (i.e., split-plot) ANOVAs for data in long format (i.e., one observation per row), potentially aggregating multiple observations per individual and cell of the design. mixed() fits mixed models using lme4::lmer() and computes p-values for all fixed effects using either Kenward-Roger approximation for degrees of freedom (LMM only), parametric bootstrap (LMMs and GLMMs), or likelihood ratio tests (LMMs and GLMMs). afex uses type 3 sums of squares as default (imitating commercial statistical software).

Version: 0.15-2
Depends: R (≥ 3.0.0), lme4 (≥ 1.0.5), reshape2, lsmeans (≥ 2.17)
Imports: stringr, coin, Matrix, pbkrtest (≥ 0.3-6), car, stats, utils, methods
Suggests: ascii, xtable, parallel, plyr, optimx, nloptr, knitr, lattice, multcomp, testthat, mlmRev, dplyr
Published: 2015-10-25
Author: Henrik Singmann [aut, cre], Ben Bolker [aut], Jake Westfall [aut], Søren Højsgaard [ctb], John Fox [ctb], Michael A. Lawrence [ctb], Ulf Mertens [ctb], Frederik Aust [ctb]
Maintainer: Henrik Singmann <singmann+afex at>
License: GPL (≥ 3)
NeedsCompilation: no
Materials: NEWS
CRAN checks: afex results


Reference manual: afex.pdf
Vignettes: ANOVA and Post-Hoc Contrasts: Reanalysis of Singmann and Klauer (2011)
Package source: afex_0.15-2.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Snow Leopard binaries: r-release: afex_0.14-2.tgz, r-oldrel: afex_0.13-145.tgz
OS X Mavericks binaries: r-release: afex_0.15-2.tgz
Old sources: afex archive