DMCfun

4.0.1

Diffusion Model of Conflict (DMC) in Reaction Time Tasks

1packages depend

3.5Kdownloads / year

62.0%test coverage

13/13checks pass

Overview

About

Maintained by Ian G. MackenzieFirst published 2020-07-0110 releasesCRAN page ↗GitHub ↗

DMC model simulation detailed in Ulrich, R., Schroeter, H., Leuthold, H., & Birngruber, T. (2015). Automatic and controlled stimulus processing in conflict tasks: Superimposed diffusion processes and delta functions. Cognitive Psychology, 78, 148-174. Ulrich et al. (2015) doi:10.1016/j.cogpsych.2015.02.005. Decision processes within choice reaction-time (CRT) tasks are often modelled using evidence accumulation models (EAMs), a variation of which is the Diffusion Decision Model (DDM, for a review, see Ratcliff & McKoon, 2008). Ulrich et al. (2015) introduced a Diffusion Model for Conflict tasks (DMC). The DMC model combines common features from within standard diffusion models with the addition of superimposed controlled and automatic activation. The DMC model is used to explain distributional reaction time (and error rate) patterns in common behavioural conflict-like tasks (e.g., Flanker task, Simon task). This R-package implements the DMC model and provides functionality to fit the model to observed data. Further details are provided in the following paper: Mackenzie, I.G., & Dudschig, C. (2021). DMCfun: An R package for fitting Diffusion Model of Conflict (DMC) to reaction time and error rate data. Methods in Psychology, 100074. doi:10.1016/j.metip.2021.100074.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("DMCfun", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("igmmgi/DMCfun")

Development version from igmmgi/DMCfun. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-dmcfun

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-DMCfun

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-DMCfun

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 5.2 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.10

62.0%

Coverage · measured lines

Dependencies · direct

Check history

OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 84 wordsVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 41%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 0%

Downloads

3.5K

CRAN downloads in the past year

Rank #11,359 · ~10/day · ~293/mo

Releases R versions

Daily download trend is not available in this view yet.

31230 days

91390 days

3.5K1 year

Compare downloads with other packages →

Also on497 r2u30 autocran

Repository

GitHub ↗ igmmgi/dmcfun

22Stars

7Forks

3Open issues

1Open PRs

0Releases

471Commits

4Contributors

471 commits · Last activity 2026-01-27 · 0% stars, 30d

Stars over time

2025-04-03 · 182026-07-07 · 22

Repository practices

Upstream repositoryBeta

1 development-tooling and community-health practice detected across 1 family in the upstream repository

Checks run against github.com/igmmgi/dmcfun on 2026-07-26.

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.0.0

Imports (7)

DEoptim Rcpp dplyrmethodsparallelpbapply tidyr

LinkingTo (2)

Rcpp BH

Suggests (4)

ggplot2 scales shiny testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

dRiftDM

Code & Tests

Datasets

People & History

People (2)

Maintainer (1)

Ian G. Mackenzie

Maintainer, Author · added in 1.3.0

Authors (2)

Ian G. Mackenzie

Maintainer, Author · added in 1.3.0

Carolin Dudschig

Author · added in 1.3.0

Package Timeline

10 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
4.0.1Latest
2024-09-16 · current release · diff ↗
unarchivedReturned to CRAN
2024-09-16
archivedRemoved from CRAN
2024-07-02
issues were not corrected in time
R
R 4.4.0 released · 2024-04-24
3.5.4
2024-02-24 · diff ↗
unarchivedReturned to CRAN
2024-02-24
archivedRemoved from CRAN
2024-01-25
check problems were not corrected in time
3.5.2
2024-01-09 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
2.0.2
2021-10-25 · diff ↗
unarchivedReturned to CRAN
2021-10-25
archivedRemoved from CRAN
2021-10-05
check problems were not corrected in time
2.0.0
2021-09-20 · diff ↗

Show 7 earlier events

R
R 4.1.0 released · 2021-05-18
1.3.0
2021-01-10 · diff ↗
1.1.0
2020-11-25 · diff ↗
0.15.0
2020-09-20 · diff ↗
0.12.1
2020-07-02 · diff ↗
0.12.0
2020-07-01
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-07-01
Total releases: 10 / 6 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.0.0
Bundled data: 160 KB / 4 files
Download size: 222 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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