title: You know what? I'm happy. Cognitive bias is not related to personality but is induced by pair-housing in canaries (Serinus canaria).
abstract: Recent studies suggest that cognitive bias could constitute a novel and valid measure of animal welfare. Although interest for a link between personality and cognition is growing, no study to date investigated whether a cognitive bias might be related to the personality of the individuals. We trained 43 domestic canaries (Serinus canaria) to discriminate between two sides of a test cage, each side being associated with a different value (attractive or aversive food in a dish). During the test phase, the dish was placed at intermediate locations, representing ambiguous information. Results show evidence of an "optimistic" bias (flying faster to the dish at the ambiguous location) in birds housed in pairs, compared to birds housed singly, suggesting an influence of social context (living conditions) on canaries' emotions when tested individually. We also studied six traits of individuals' personality and found that aggressiveness, neophobia, one sociability index and obstinacy were repeatable across social context and/or day-light schedule, whereas the other sociability index, boldness and locomotion were not. No correlation between the birds' optimism and any of their personality traits was found, suggesting that cognitive bias may be a matter of social context rather than of individual personality.
authors.affiliation: Laboratoire Ethologie Cognition Développement, Université Nanterre Paris Ouest La Défense, Nanterre, France.
authors.forename: Mathilde
authors.initials: M
authors.lastname: Lalot
authors.affiliation: Laboratoire Ethologie Cognition Développement, Université Nanterre Paris Ouest La Défense, Nanterre, France.
authors.forename: Davy
authors.initials: D
authors.lastname: Ung
authors.affiliation: Laboratoire Ethologie Cognition Développement, Université Nanterre Paris Ouest La Défense, Nanterre, France.
authors.forename: Franck
authors.initials: F
authors.lastname: Péron
authors.affiliation: Laboratoire d'Ethologie Expérimentale et Comparée, Université Paris-Nord, Sorbonne Paris Cité, Villetaneuse, France.
authors.forename: Patrizia
authors.initials: P
authors.lastname: d'Ettorre
authors.affiliation: Laboratoire Ethologie Cognition Développement, Université Nanterre Paris Ouest La Défense, Nanterre, France. Electronic address: dbovet@u-paris10.fr.
authors.forename: Dalila
authors.initials: D
authors.lastname: Bovet
mesh_terms: D000818:Animals; D002171:Canaries / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D005260:Female; D006799:Housing, Animal; D008297:Male; D010551:Personality / Q000502:physiology*
keywords: Animal welfare; Cognitive bias; Emotions; Individual differences; Personality; Serinus canaria; Social enrichment