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Author Notes:

Email: dewaal@emory.edu

Thanks to Josh Plotnik for feedback.

Subject:

Research Funding:

The authors received no specific funding for this work.

Keywords:

  • mirror mark test
  • self-awareness
  • binary
  • gradualist model
  • ambiguous behavior

Fish, mirrors, and a gradualist perspective on self-awareness

Tools:

Journal Title:

PLoS Biology

Volume:

Volume 17, Number 2

Publisher:

, Pages e3000112-e3000112

Type of Work:

Article | Final Publisher PDF

Abstract:

The mirror mark test has encouraged a binary view of self-awareness according to which a few species possess this capacity whereas others do not. Given how evolution works, however, we need a more gradualist model of the various ways in which animals construe a self and respond to mirrors. The recent study on cleaner wrasses (Labroides dimidiatus) by Kohda and colleagues highlights this need by presenting results that, due to ambiguous behavior and the use of physically irritating marks, fall short of mirror self-recognition. The study suggests an intermediate level of mirror understanding, closer to that of monkeys than hominids.

Copyright information:

© 2019 Frans B. M. de Waal.

This is an Open Access work distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/).
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