Capturing abnormal personality with normal personality inventories: an item response theory approach.

  title={Capturing abnormal personality with normal personality inventories: an item response theory approach.},
  author={Kate E. Walton and Brent W Roberts and Robert F Krueger and Daniel M Blonigen and Brian M. Hicks},
  journal={Journal of personality},
  volume={76 6},
Correlational and factor-analytic methods indicate that abnormal and normal personality constructs may be tapping the same underlying latent trait. However, they do not systematically demonstrate that measures of abnormal personality capture more extreme ranges of the latent trait than measures of normal range personality. Item Response Theory (IRT) methods, in contrast, do provide this information. In the present study, we use IRT methods to evaluate the range of the latent trait assessed with… CONTINUE READING
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