Immobility reactions (fear) of domestic fowl as a function of age and prior experience

@article{Ratner1960ImmobilityR,
  title={Immobility reactions (fear) of domestic fowl as a function of age and prior experience},
  author={S. Ratner and R. Thompson},
  journal={Animal Behaviour},
  year={1960},
  volume={8},
  pages={186-191}
}
Abstract Two experiments were performed to investigate the effects of age and prior testing on immobility reactions of chickens from two through 66 days of age. In each experiment, one group was tested repeatedly while different subgroups were tested only once at the ages of the repeated test group and then discarded. Tests were conducted by turning each of the 305 birds on its side and holding it down for 15 seconds after which the immobility reactions were observed and timed. The immobility… Expand
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