Social modulation of risky decision-making in rats (Rattus norvegicus) and tufted capuchin monkeys (Sapajus spp.)

Behavioural Brain Research
F ZorattoElsa Addessi

Abstract

Both human and non-human animals frequently deal with risky decisions in a social environment. Nevertheless, the influence of the social context on decision-making has been scarcely investigated. Here, we evaluated for the first time whether the presence of a conspecific influences risk preferences in rats and in tufted capuchin monkeys. Subjects received a series of choices between a constant, safe option and a variable, risky option, both alone (Alone condition) and when paired with a conspecific (Paired condition). The average payoff of the risky option was always lower than that of the safe option. Overall, the two species differed in their attitude towards risk: whereas rats were indifferent between options, capuchins exhibited a preference for the safe option. In both species, risk preferences changed in the Paired condition compared to the Alone condition, although in an opposite way. Whereas rats increased their risk preferences over time when paired with a conspecific, capuchins chose the risky option less in the Paired condition than in the Alone condition. Moreover, whereas anxiety-like behaviours decreased across sessions in rats, these behaviours where more represented in the Paired condition than in the Alone cond...Continue Reading

Citations

Dec 25, 2019·Neuroscience and Biobehavioral Reviews·Elsa AddessiJean-Baptiste Leca
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Francesca De Petrillo, Alexandra G Rosati
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Stefanie KeuppAlicia P Melis
Jun 6, 2020·Behavioural Brain Research·Fabiana FestucciWalter Adriani
Jul 29, 2021·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Valentina ChiodiManlio Vinciguerra

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