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Istituto di scienze e tecnologie della cognizione

Torna all'elenco Contributi in rivista anno 2011

Contributo in rivista

Tipo: Abstract in rivista

Titolo: Response Latency and Self-Directed Behaviours by Capuchin Monkeys in an Intertemporal Choice Task

Anno di pubblicazione: 2011

Formato: Elettronico Cartaceo

Autori: M. Ventricelli (a,b); V. Focaroli (a,b); F. De Petrillo (a,b) ; L. Macchitella (a,c); F. Paglieri (a); E. Addessi (a)

Affiliazioni autori: a) Istituto di scienze e tecnologie della cognizione CNR, b) Sapienza UniversitÓ di Roma, c) AIPEPUACZ, Associazione Italiana Psicologia, Etologia, Psicobiologia Umana, Animale, Comparata e Zooantropologia

Autori CNR:

  • ELSA ADDESSI
  • FRANCESCA DE PETRILLO
  • FABIO PAGLIERI

Lingua: inglese

Abstract: Several studies have investigated response latency in different tasks, showing that more complex choices usually require more time than less complex ones. In both humans and non-human primates self-directed behaviours, such as scratching, are related to frustration and anxiety. A few studies demonstrated that in great apes the occurrence of self-directed behaviours during cognitive tasks increase with task difficulty. Here, we investigated how response latency, scratching and other potentially stress-related behaviours vary in nine capuchins faced with an intertemporal choice task, an inhibition task where subjects face choices between a small immediate option and a large delayed option. We scored: (i) response latency, (ii) scratching, alarm calls, and pointing at chosen/not chosen option (a behaviour indicating motor impulsivity) during the delay associated to the large option, and (iii) scratching and alarm calls during the intertrial interval. Overall, there was a significant decrease of response latency across sessions. Moreover, in the course of the study, capuchins adjusted their behaviour to the hard task requirement (waiting for a desired reward), becoming less stressed during the delay. In fact, (i) scratching decreased both within each session and across sessions, and (ii) pointing at chosen/not chosen option decreased across sessions. In contrast, during the intertrial interval alarm calls increased across sessions. Thus, experience helps capuchins to cope with productive delays (i.e. instrumental to obtaining a reward), but has a negative impact on their tolerance for meaningless delays (i.e. non related with the specific task, as in the intertrial interval).

Pagine da: 268

Pagine a: 269

Rivista:

Folia primatologica S. Karger,
Paese di pubblicazione: Svizzera
Lingua: inglese
ISSN: 0015-5713

Numero volume: 82

Numero fascicolo: 4-5

Parole chiave:

  • Scratching
  • Motor impulsivity
  • Inhibition
  • Cebus apella

Altre informazioni: ID_PUMA: /cnr.istc/2011-B6-012. - Area di valutazione 11 - Scienze storiche, filosofiche, psicologiche e pedagogiche. - Abstract presentato al 20th Meeting of Italian Primatological Association, Bussolengo, 10-13 aprile 2011. - Rivista pubblicata anche in ed. online (ISSN 1421-9980)

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