A California Sea Lion (Zalophus Californianus) is Capable of Forming Equivalence Relations

@article{Schusterman1993ACS,
  title={A California Sea Lion (Zalophus Californianus) is Capable of Forming Equivalence Relations},
  author={R. Schusterman and D. Kastak},
  journal={The Psychological Record},
  year={1993},
  volume={43},
  pages={823-839}
}
If a nonhuman animal matches the silhouette “crab” (A) to that of a “tulip” (B) and is further taught to match “tulip” (B) to the silhouette “radio” (C), will it immediately match “radio” (C) to “crab” (A)? To date formation of an equivalence relation of this type has not been demonstrated in animals. In our study, designed to give a sea lion match-to-sample experience with examples of sample and comparison stimuli switching roles, a 7-year-old female (Rio) was trained and tested with 30… Expand

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