@article{Davies:100521,
      recid = {100521},
      author = {Davies, Stephen P. and Loomis, John B.},
      title = {An Improved Method for Calibrating Purchase Intentions in  Stated Preference Demand Models},
      journal = {Journal of Agricultural and Applied Economics},
      address = {2010-11},
      number = {1379-2016-113647},
      pages = {15},
      year = {2010},
      abstract = {The Orbit demand model allows the magnitude of the  calibration to stated purchase intentions to vary based on  the magnitude of the stated quantities. Using an empirical  example of stated trips, we find that the extent of  calibration varies substantially with less correction  needed at small stated trips (–25%) but larger corrections  at higher quantities of stated visits (–48%).
We extend the  Orbit model to calculate consumer surplus per stated trip  of $26. Combining the calibrations in stated trips and  value per trip, the Orbit model provides estimates of  annual benefits from 60% to 111% less than the count data  model.},
      url = {http://ageconsearch.umn.edu/record/100521},
      doi = {https://doi.org/10.22004/ag.econ.100521},
}