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A comparative test of inequity aversion in domestic dogs (Canis familiaris) and dingoes (Canis dingo).
PLOS ONE ( IF 3.7 ) Pub Date : 2021-09-22 , DOI: 10.1371/journal.pone.0255885
Katherine McAuliffe 1, 2
Affiliation  

Despite much recent empirical work on inequity aversion in nonhuman species, many questions remain about its distribution across taxa and the factors that shape its evolution and expression. Past work suggests that domestic dogs (Canis familiaris) and wolves (Canis lupus) are averse to inequitable resource distributions in contexts that call upon some degree of training such as 'give paw' and 'buzzer press' tasks. However, it is unclear whether inequity aversion appears in other canid species and in other experimental contexts. Using a novel inequity aversion task that does not require specific training, this study helps address these gaps by investigating inequity aversion in domestic dogs and a closely related but non-domesticated canid, the dingo (Canis dingo). Subjects were presented with equal and unequal reward distributions and given the opportunity to approach or refuse to approach allocations. Measures of interest were (1) subjects' refusal to approach when getting no food; (2) approach latency; and (3) social referencing. None of these measures differed systematically across the inequity condition and control conditions in either dogs or dingoes. These findings add to the growing literature on inequity aversion in canids, providing data from a new species and a new experimental context. Additionally, they raise questions about the experimental features that must be in place for inequity aversion to appear in canids.

中文翻译:

对家犬 (Canisfamiliaris) 和澳洲野狗 (Canis dingo) 的不平等厌恶的比较测试。

尽管最近有很多关于非人类物种的不平等厌恶的实证研究,但关于它在分类群中的分布以及影响其进化和表达的因素仍然存在许多问题。过去的工作表明,家犬(Canisfamiliaris)和狼(Canis lupus)在需要某种程度的训练(例如“伸出爪子”和“按蜂鸣器”任务)的环境中反对不公平的资源分配。然而,尚不清楚不平等厌恶是否出现在其他犬科动物和其他实验环境中。本研究使用一种不需要特定训练的新型不公平厌恶任务,通过调查家犬和一种密切相关但非驯化犬科动物(Canis dingo)的不公平厌恶,帮助解决这些差距。受试者被呈现平等和不平等的奖励分配,并有机会接近或拒绝接近分配。感兴趣的测量是(1)受试者在没有食物时拒绝接近;(2) 进场潜伏期;(3) 社会参考。这些措施在狗或野狗的不公平条件和控制条件下都没有系统性差异。这些发现增加了越来越多关于犬科动物不公平厌恶的文献,提供了来自新物种和新实验环境的数据。此外,他们还提出了有关实验特征的问题,这些特征必须到位才能在犬科动物中出现。(3) 社会参考。这些措施在狗或野狗的不公平条件和控制条件下都没有系统性差异。这些发现增加了越来越多关于犬科动物不公平厌恶的文献,提供了来自新物种和新实验环境的数据。此外,他们还提出了有关实验特征的问题,这些特征必须到位才能在犬科动物中出现。(3) 社会参考。这些措施在狗或野狗的不公平条件和控制条件下都没有系统性差异。这些发现增加了越来越多关于犬科动物不公平厌恶的文献,提供了来自新物种和新实验环境的数据。此外,他们还提出了有关实验特征的问题,这些特征必须到位才能在犬科动物中出现。
更新日期:2021-09-22
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