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Here, we investigated if dogs’ sensitivity to inequity is affected by their capacity for inhibitory control, assessed in a test battery and questionnaire.Overall, dogs showing high compulsivity scores (i.e.a measure of dogs’ persistence in manipulating apparatuses), compulsivity (i.e.a measure of dogs’ consistently choosing the same option despite of not being rewarded) and decision speed (i.e. The aim of the current study was therefore to investigate the role of inhibitory control (and more specifically its three main identified components) in the expression of inequity aversion in dogs.
Inhibitory control has been proposed to act as one factor responsible for this variation since individuals need to inhibit performing the required action and/or refuse rewards in order to exhibit inequity aversion.To our knowledge, no study so far has investigated the relationship between inhibitory control and inequity aversion directly.However, some studies looked at other cooperative behaviours likely linked to inequity aversion in humans (e.g.exchanging a token, giving a paw or pulling a tray) in order to receive rewards, which are either equally or unequally distributed between partners.
If an individual refuses to continue participating in the task after witnessing that their partner received a reward of better quality for the same amount of work (by either stopping to perform the required action or refusing to accept the reward), it is considered to show inequity aversion.However, cooperative interactions are mostly beneficial if the payoff is shared more or less equally among all individuals that contributed to the action.