@article{Hockmann:91733,
      recid = {91733},
      author = {Hockmann, Heinrich and Pieniadz, Agata and Goraj, Lech},
      title = {MODELING HETEROGENEITY IN PRODUCTION MODELS: EMPIRICAL  EVIDENCE FROM INDIVIDUAL FARMING IN POLAND},
      address = {2007},
      number = {918-2016-72643},
      series = {IAMO Discussion Papers},
      pages = {29},
      year = {2007},
      abstract = {This discussion paper deals with the estimation of a  random coefficient model. The virtue of
this approach is  that it considers firm heterogeneity, which conventional  SFA models do not.
Applying the model to Polish farms, the  results indicate that the conventional random and
fixed  effect models overestimate the inefficiency score. In  addition, the reasons for inefficiency
are analyzed. It is  shown that despite the fragmentation of Polish agriculture,  there is
no evidence for scale inefficiency. Moreover,  inefficiency could partly be attributed to factors,
which  affect the management input and requirements on farms.},
      url = {http://ageconsearch.umn.edu/record/91733},
      doi = {https://doi.org/10.22004/ag.econ.91733},
}