More Voodoo correlations: when average-based measures inflate correlations.

@article{Brand2012MoreVC,
  title={More Voodoo correlations: when average-based measures inflate correlations.},
  author={Andrew Brand and Michael T. Bradley},
  journal={The Journal of general psychology},
  year={2012},
  volume={139 4},
  pages={260-72}
}
A Monte-Carlo simulation was conducted to assess the extent that a correlation estimate can be inflated when an average-based measure is used in a commonly employed correlational design. The results from the simulation reveal that the inflation of the correlation estimate can be substantial, up to 76%. Additionally, data was re-analyzed from two previously published studies to determine the extent that the correlation estimate was inflated due to the use of an averaged based measure. The re… CONTINUE READING
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