Framing the debate on human-like framing effects in bonobos and chimpanzees: a comment on Krupenye_et_al.(2015)
Auteurs:Kanngiesser, Patricia; Woike, Jan K.
Année de publication:2016
Date de publication:2016-01
Recently, Krupenye, Rosati & Hare (KRH henceforth) reported that bonobos and chimpanzees show ‘human-like framing effects’ in a food choice task. Chimpanzees and bonobos could choose between a ‘framed’ option of fruit and an alternative option of peanuts (matched in expected value to the framed option). Apes saw either one fruit piece to which one piece was added with p 1⁄4 0.5 probability (gain frame) or two fruit pieces from which one piece was subtracted with p 1⁄4 0.5 probability (loss frame). Apes chose the framed option more often in a gain frame than in a loss frame (though this effect was strongest in male apes). KRH conclude that “...both of humans’ closest relatives exhibit human-like framing effects...” and that this bias may be the product of “...shared ancestry between humans, non-human apes and perhaps other species as well.” ...