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To cite diffIRT in publications use:

Molenaar D, Tuerlinckx F, van der Maas HLJ (2015). “Fitting Diffusion Item Response Theory Models for Responses and Response Times Using the R Package diffIRT.” Journal of Statistical Software, 66(4), 1–34. http://www.jstatsoft.org/v66/i04/.

Corresponding BibTeX entry:

  @Article{,
    title = {Fitting Diffusion Item Response Theory Models for
      Responses and Response Times Using the {R} Package {diffIRT}},
    author = {Dylan Molenaar and Francis Tuerlinckx and Han L. J. {van
      der Maas}},
    journal = {Journal of Statistical Software},
    year = {2015},
    volume = {66},
    number = {4},
    pages = {1--34},
    url = {http://www.jstatsoft.org/v66/i04/},
  }

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.