Experimental evidence of receiver bias for symmetry
2002 (English)In: Animal Behaviour, ISSN 0003-3472, Vol. 63, no 3, 617-621 p.Article in journal (Refereed) Published
This experiment provides the first empirical evidence that symmetry preferences may arise as a by-product of animals' recognition mechanisms. We used a computer touch screen to train domestic fowl, Gallus gallus domesticus, to discriminate between rewarding and nonrewarding stimuli. The rewarding stimuli consisted of two slightly asymmetrical crosses that were mirror images of each other. After training, all subjects preferred a novel symmetrical cross to the asymmetrical training stimuli. Naïve hens tested on the same symbols but without any previous training did not show any symmetry preferences. These results show that symmetry preferences can emerge after experiences with different stimuli that are asymmetrical but that are symmetrical when combined. A preference for symmetrical signals may thus arise as a consequence of generalization and without any link to, for instance, quality of the signal sender
Place, publisher, year, edition, pages
Elsevier , 2002. Vol. 63, no 3, 617-621 p.
Research subject Zoology
IdentifiersURN: urn:nbn:se:su:diva-23209DOI: 10.1006/anbe.2001.1936OAI: oai:DiVA.org:su-23209DiVA: diva2:190701
Part of urn:nbn:se:su:diva-1892004-05-192004-05-192010-01-04Bibliographically approved