@article{MatuschekKlieglVasishthetal.2017,
  author    = {Matuschek, Hannes and Kliegl, Reinhold and Vasishth, Shravan and Baayen, Harald R. and Bates, Douglas},
  title     = {Balancing Type I error and power in linear mixed models},
  series = {Journal of memory and language},
  volume    = {94},
  journal   = {Journal of memory and language},
  publisher = {Elsevier},
  address   = {San Diego},
  issn      = {0749-596X},
  doi       = {10.1016/j.jml.2017.01.001},
  pages     = {305 -- 315},
  year      = {2017},
  abstract  = {Linear mixed-effects models have increasingly replaced mixed-model analyses of variance for statistical inference in factorial psycholinguistic experiments. Although LMMs have many advantages over ANOVA, like ANOVAs, setting them up for data analysis also requires some care. One simple option, when numerically possible, is to fit the full variance covariance structure of random effects (the maximal model; Barr, Levy, Scheepers \& Tily, 2013), presumably to keep Type I error down to the nominal a in the presence of random effects. Although it is true that fitting a model with only random intercepts may lead to higher Type I error, fitting a maximal model also has a cost: it can lead to a significant loss of power. We demonstrate this with simulations and suggest that for typical psychological and psycholinguistic data, higher power is achieved without inflating Type I error rate if a model selection criterion is used to select a random effect structure that is supported by the data. (C) 2017 The Authors. Published by Elsevier Inc.},
  language  = {en}
}
@article{BaayenVasishthKliegletal.2017,
  author    = {Baayen, Harald R. and Vasishth, Shravan and Kliegl, Reinhold and Bates, Douglas},
  title     = {The cave of shadows: Addressing the human factor with generalized additive mixed models},
  series = {Journal of memory and language},
  volume    = {94},
  journal   = {Journal of memory and language},
  publisher = {Elsevier},
  address   = {San Diego},
  issn      = {0749-596X},
  doi       = {10.1016/j.jml.2016.11.006},
  pages     = {206 -- 234},
  year      = {2017},
  language  = {en}
}
@article{KlieglBates2011,
  author    = {Kliegl, Reinhold and Bates, Douglas},
  title     = {International collaboration in psychology is on the rise},
  series = {Scientometrics : an international journal for all quantitative aspects of the science of science, communication in science and science policy},
  volume    = {87},
  journal   = {Scientometrics : an international journal for all quantitative aspects of the science of science, communication in science and science policy},
  number    = {1},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {0138-9130},
  doi       = {10.1007/s11192-010-0299-0},
  pages     = {149 -- 158},
  year      = {2011},
  abstract  = {There has been a substantial increase in the percentage for publications with co-authors located in departments from different countries in 12 major journals of psychology. The results are evidence for a remarkable internationalization of psychological research, starting in the mid 1970s and increasing in rate at the beginning of the 1990s. This growth occurs against a constant number of articles with authors from the same country; it is not due to a concomitant increase in the number of co-authors per article. Thus, international collaboration in psychology is obviously on the rise.},
  language  = {en}
}
@article{KlieglBates2011,
  author    = {Kliegl, Reinhold and Bates, Douglas},
  title     = {International collaboration in psychology is on the rise},
  doi       = {10.1007/s11192-010-0299-0},
  year      = {2011},
  abstract  = {There has been a substantial increase in the percentage for publications with co-authors located in departments from different countries in 12 major journals of psychology. The results are evidence for a remarkable internationalization of psychological research, starting in the mid 1970s and increasing in rate at the beginning of the 1990s. This growth occurs against a constant number of articles with authors from the same country; it is not due to a concomitant increase in the number of co-authors per article. Thus, international collaboration in psychology is obviously on the rise.},
  language  = {en}
}
@misc{KlieglBates2011,
  author    = {Kliegl, Reinhold and Bates, Douglas},
  title     = {International Collaboration in Psychology is on the Rise},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-57045},
  year      = {2011},
  abstract  = {There has been a substantial increase in the percentage for publications with co-authors located in departments from different countries in 12 major journals of psychology. The results are evidence for a remarkable internationalization of psychological research, starting in the mid 1970s and increasing in rate at the beginning of the 1990s. This growth occurs against a constant number of articles with authors from the same country; it is not due to a concomitant increase in the number of co-authors per article. Thus, international collaboration in psychology is obviously on the rise.},
  language  = {en}
}