Bimodal Score Distributions and the Myers-Briggs Type Indicator: Fact or Artifact?

@article{Bess2002BimodalSD,
  title={Bimodal Score Distributions and the Myers-Briggs Type Indicator: Fact or Artifact?},
  author={Tammy L. Bess and Robert James Harvey},
  journal={Journal of Personality Assessment},
  year={2002},
  volume={78},
  pages={176 - 186}
}
We examined Myers-Briggs Type Indicator (MBTI) score distributions computed using item response theory (IRT) to assess the generalizability of earlier bimodality reports that have been cited in support of the "type" versus "trait" view of personality. Using the BILOG IRT program to score a sample of approximately 12,000 individuals who participated in leadership development programs, q score distributions for the 4 dimensions of the MBTI computed using 10 (the BILOG default) versus 50… 
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