A Hyperbolic Cosine Latent Trait Model For Unfolding Dichotomous Single-Stimulus Responses

@article{Andrich1993AHC,
  title={A Hyperbolic Cosine Latent Trait Model For Unfolding Dichotomous Single-Stimulus Responses},
  author={David Andrich and Guanzhong Luo},
  journal={Applied Psychological Measurement},
  year={1993},
  volume={17},
  pages={253 - 276}
}
Social-psychological variables are typically measured using either cumulative or unfolding response processes. In the former, the greater the location of a person relative to the location of a stimulus on the continuum, the greater the proba bility of a positive response; in the latter, the closer the location of the person to the location of the statement, irrespective of direction, the greater the probability of a positive response. Formal probability models for these processes are, respec… 

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