The Delboeuf Illusion in Food Portion Judgments By Chimpanzees (Pan Troglodytes)

Audrey Parrish, Georgia State University, USA
Michael Beran, Georgia State University, USA
Chimpanzees preferred choosing same-sized and smaller food portions that were presented on a smaller plate over equal or larger food portions presented on a larger plate. These biases can be attributed to the Delboeuf Illusion which previously had only been demonstrated in portion estimation and consumption behavior in humans.
[ to cite ]:
Audrey Parrish and Michael Beran (2013) ,"The Delboeuf Illusion in Food Portion Judgments By Chimpanzees (Pan Troglodytes) ", in NA - Advances in Consumer Research Volume 41, eds. Simona Botti and Aparna Labroo, Duluth, MN : Association for Consumer Research.