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Author Lovrovich, P.; Sighieri, C.; Baragli, P. url  doi
openurl 
  Title Following human-given cues or not? Horses (Equus caballus) get smarter and change strategy in a delayed three choice task Type Journal Article
  Year 2015 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 166 Issue Pages 80-88  
  Keywords  
  Abstract Highlights

�Horses remember the location of food hidden by the experimenter after a delay.

�They understand the communicative meaning of a human positioned close to the target.

�The same horses are capable of changing their decision-making strategy.

�They are able to shift from accuracy inferred from human given cues to speed.

�Horses can use human cues or not depending on time, cost, experience and reward.

Abstract

To date, horses have seemed capable of using human local enhancement cues only when the experimenter remains close to the reward, since they fail to understand the communicative meaning of the human as momentary local enhancement cue (when the human is not present at the moment of the animal's choice). This study was designed to analyse the ability of horses to understand, remember and use human-given cues in a delayed (10 s) three-choice task. Twelve horses (experimental group) had to find a piece of carrot hidden under one of three overturned buckets after seeing the experimenter hide it. The results were then compared with those of a control group (twelve horses) that had to find the carrot using only the sense of smell or random attempts. At the beginning, the experimental horses made more correct choices at the first attempt, although they took more time to find the carrot. Later the same horses were less accurate but found the carrot in less time. This suggests that the value of the proximal momentary local enhancement cues became less critical. It seemed, in fact, that the experimental and control group had aligned their behaviour as the trials proceeded. Despite this similarity, in the second half of the trials, the experimental group tended to first approach the bucket where they had found the carrot in the immediately preceding trial. Our findings indicate that horses are capable of remembering the location of food hidden by the experimenter after a delay, by using the human positioned close to the target as valuable information. The same horses are also capable of changing their decision-making strategy by shifting from the accuracy inferred from human given cues to speed. Therefore, horses are able to decide whether or not to use human given-cues, depending on a speed-accuracy trade-off.
 
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  Corporate Author Thesis  
  Publisher Elsevier Place of Publication Editor  
  Language Summary Language Original Title  
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  Area Expedition Conference  
  Notes doi: 10.1016/j.applanim.2015.02.017 Approved no  
  Call Number Equine Behaviour @ team @ Serial 5849  
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