To sum or not to sum: taxometric analysis with ordered categorical assessment items.

@article{Walters2009ToSO,
  title={To sum or not to sum: taxometric analysis with ordered categorical assessment items.},
  author={G. Walters and J. Ruscio},
  journal={Psychological assessment},
  year={2009},
  volume={21 1},
  pages={
          99-111
        }
}
Meehl's taxometric method has been shown to differentiate between categorical and dimensional data, but there are many ways to implement taxometric procedures. When analyzing the ordered categorical data typically provided by assessment instruments, summing items to form input indicators has been a popular practice for more than 20 years. A Monte Carlo study compared the accuracy of taxometric analyses implemented in the traditional way (without summing items) and taxometric analyses… Expand
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