Understanding of the concept of numerically "less" by bottlenose dolphins (Tursiops truncatus).

@article{Jaakkola2005UnderstandingOT,
  title={Understanding of the concept of numerically "less" by bottlenose dolphins (Tursiops truncatus).},
  author={Kelly Jaakkola and Wendi Fellner and Linda Erb and Mandy Rodriguez and Emily Guarino},
  journal={Journal of comparative psychology},
  year={2005},
  volume={119 3},
  pages={296-303}
}
In 2 experiments, bottlenose dolphins (Tursiops truncatus) judged the ordinal relationship between novel numerosities. The dolphins were first trained to choose the exemplar with the fewer number of items when presented with just a few specific comparisons (e.g., 2 vs. 6, 1 vs. 3, and 3 vs. 7). Generalization of this rule was then tested by presenting the dolphins with all possible pairwise comparisons between 1 and 8. The dolphins chose the exemplar with the fewer number of items at levels far… CONTINUE READING
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