% pubman genre = article
@article{item_3647518,
title = {{Bonobos respond aversively to unequal reward distributions}},
author = {Radovanovi{\'c}, Kia and Lorskens, Anoek and Sch{\"u}tte, Sebastian and Br{\"a}uer, Juliane and Call, Josep and Haun, Daniel B. M. and Van Leeuwen, Edwin J. C.},
language = {eng},
issn = {0962-8452},
doi = {10.1098/rspb.2024.2873},
year = {2025},
abstract = {{Inequity aversion (IA) is the resistance to unequitable rewards given{\textless}br{\textgreater}similar investments. It has been postulated as an important mechanism{\textless}br{\textgreater}by which human cooperation thrives. To understand the evolutionary{\textless}br{\textgreater}origin of human IA and its distribution across the animal kingdom, many{\textless}br{\textgreater}species have been tested on IA, with mixed results. Whereas chimpanzees{\textless}br{\textgreater}were originally found to show IA, more recent studies showed that their{\textless}br{\textgreater}IA response could be explained by social disappointment. We conducted{\textless}br{\textgreater}two studies on IA in bonobos using established paradigms: a token-{\textless}br{\textgreater}exchange task and the social disappointment task. Bonobos could exchange{\textless}br{\textgreater}tokens for equal or less-preferred food rewards than their partners (Study{\textless}br{\textgreater}1) and were tested with humans and machines to control for social{\textless}br{\textgreater}disappointment effects (Study 2). We found that bonobos responded{\textless}br{\textgreater}aversively to unequal food distributions in both studies, which was{\textless}br{\textgreater}reflected by more refusals to participate when disadvantaged. Notably,{\textless}br{\textgreater}and contrary to chimpanzees, this effect could not be explained by social{\textless}br{\textgreater}disappointment, although Study 2 was only partially consistent with an{\textless}br{\textgreater}IA explanation. Overall, our findings indicate that bonobos possess the{\textless}br{\textgreater}sensitivity to recognize and respond to unfair treatment, which supports{\textless}br{\textgreater}the notion that IA may have coevolved as a stabilizing mechanism for{\textless}br{\textgreater}cooperation.}},
journal = {{Proceedings of the Royal Society of London. Series B: Biological Sciences (London)}},
volume = {292},
number = {2045},
eid = {20242873},
}